Manifest

Companion object Manifest

trait Manifest[T] extends ClassManifest[T] with Equals

A Manifest[T] is an opaque descriptor for type T. Its supported use is to give access to the erasure of the type as a Class instance, as is necessary for the creation of native Arrays if the class is not known at compile time.

The type-relation operators <:< and =:= should be considered approximations only, as there are numerous aspects of type conformance which are not yet adequately represented in manifests.

Example usages:

def arr[T] = new Array[T](0)                          // does not compile
def arr[T](implicit m: Manifest[T]) = new Array[T](0) // compiles
def arr[T: Manifest] = new Array[T](0)                // shorthand for the preceding

// Methods manifest and optManifest are in [[scala.Predef]].
def isApproxSubType[T: Manifest, U: Manifest] = manifest[T] <:< manifest[U]
isApproxSubType[List[String], List[AnyRef]] // true
isApproxSubType[List[String], List[Int]]    // false

def methods[T: Manifest] = manifest[T].runtimeClass.getMethods
def retType[T: Manifest](name: String) =
  methods[T] find (_.getName == name) map (_.getGenericReturnType)

retType[Map[_, _]]("values")  // Some(scala.collection.Iterable<B>)

Annotations: @nowarn() @implicitNotFound()
Source: Manifest.scala

Linear Supertypes

ClassTag[T], Equals, ClassManifestDeprecatedApis[T], OptManifest[T], java.io.Serializable, AnyRef, Any

Known Subclasses

AnyValManifest

Type Hierarchy

Ordering

Alphabetic
By Inheritance

Inherited

Manifest
ClassTag
Equals
ClassManifestDeprecatedApis
OptManifest
Serializable
AnyRef
Any

Implicitly

by any2stringadd
by StringFormat
by Ensuring
by ArrowAssoc

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Visibility

Public
Protected

Abstract Value Members

abstract def runtimeClass: Class[_]
A class representing the type U to which T would be erased.
A class representing the type U to which T would be erased. Note that there is no subtyping relationship between T and U.
Definition Classes
ClassTag

Concrete Value Members

final def !=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
returns
true if !(this == that), false otherwise.
Definition Classes
AnyRef → Any
final def ##: Int
Equivalent to x.hashCode except for boxed numeric types and null.
Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.
returns
a hash value consistent with ==
Definition Classes
AnyRef → Any
def +(other: String): String
Implicit
This member is added by an implicit conversion from Manifest[T] toany2stringadd[Manifest[T]] performed by method any2stringadd in scala.Predef.
Definition Classes
any2stringadd
def ->[B](y: B): (Manifest[T], B)
Implicit
This member is added by an implicit conversion from Manifest[T] toArrowAssoc[Manifest[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc
Annotations
@inline()
final def ==(arg0: Any): Boolean
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
returns
true if the receiver object is equivalent to the argument; false otherwise.
Definition Classes
AnyRef → Any
def argString: String
Attributes
protected
Definition Classes
ClassManifestDeprecatedApis
def arrayClass[A](tp: Class[_]): Class[Array[A]]
Attributes
protected
Definition Classes
ClassManifestDeprecatedApis
def arrayManifest: Manifest[Array[T]]
Definition Classes
Manifest → ClassManifestDeprecatedApis
final def asInstanceOf[T0]: T0
Cast the receiver object to be of type T0.
Cast the receiver object to be of type T0.
Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.
returns
the receiver object.
Definition Classes
Any
Exceptions thrown
ClassCastException if the receiver object is not an instance of the erasure of type T0.
def canEqual(that: Any): Boolean
A method that should be called from every well-designed equals method that is open to be overridden in a subclass.
A method that should be called from every well-designed equals method that is open to be overridden in a subclass. See Programming in Scala, Chapter 28 for discussion and design.
that
the value being probed for possible equality
returns
true if this instance can possibly equal that, otherwise false
Definition Classes
Manifest → ClassTag → Equals → ClassManifestDeprecatedApis
def clone(): AnyRef
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the clone method is platform dependent.
returns
a copy of the receiver object.
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.CloneNotSupportedException]) @native()
Note
not specified by SLS as a member of AnyRef
def ensuring(cond: (Manifest[T]) => Boolean, msg: => Any): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: (Manifest[T]) => Boolean): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean, msg: => Any): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
final def eq(arg0: AnyRef): Boolean
Tests whether the argument (that) is a reference to the receiver object (this).
Tests whether the argument (that) is a reference to the receiver object (this).
The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:
- It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
- For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
- null.eq(null) returns true.
When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).
returns
true if the argument is a reference to the receiver object; false otherwise.
Definition Classes
AnyRef
def equals(that: Any): Boolean
Note: testing for erasure here is important, as it is many times faster than <:< and rules out most comparisons.
Note: testing for erasure here is important, as it is many times faster than <:< and rules out most comparisons.
Definition Classes
Manifest → ClassTag → Equals → AnyRef → Any
def finalize(): Unit
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.Throwable])
Note
not specified by SLS as a member of AnyRef
final def getClass(): Class[_ <: AnyRef]
Returns the runtime class representation of the object.
Returns the runtime class representation of the object.
returns
a class object corresponding to the runtime type of the receiver.
Definition Classes
AnyRef → Any
Annotations
@native()
def hashCode(): Int
The hashCode method for reference types.
The hashCode method for reference types. See hashCode in scala.Any.
returns
the hash code value for this object.
Definition Classes
Manifest → ClassTag → AnyRef → Any
final def isInstanceOf[T0]: Boolean
Test whether the dynamic type of the receiver object has the same erasure as T0.
Test whether the dynamic type of the receiver object has the same erasure as T0.
Depending on what T0 is, the test is done in one of the below ways:
- T0 is a non-parameterized class type, e.g. BigDecimal: this method returns true if the value of the receiver object is a BigDecimal or a subtype of BigDecimal.
- T0 is a parameterized class type, e.g. List[Int]: this method returns true if the value of the receiver object is some List[X] for any X. For example, List(1, 2, 3).isInstanceOf[List[String]] will return true.
- T0 is some singleton type x.type or literal x: this method returns this.eq(x). For example, x.isInstanceOf[1] is equivalent to x.eq(1)
- T0 is an intersection X with Y or X & Y: this method is equivalent to x.isInstanceOf[X] && x.isInstanceOf[Y]
- T0 is a union X | Y: this method is equivalent to x.isInstanceOf[X] || x.isInstanceOf[Y]
- T0 is a type parameter or an abstract type member: this method is equivalent to isInstanceOf[U] where U is T0's upper bound, Any if T0 is unbounded. For example, x.isInstanceOf[A] where A is an unbounded type parameter will return true for any value of x.
This is exactly equivalent to the type pattern _: T0
returns
true if the receiver object is an instance of erasure of type T0; false otherwise.
Definition Classes
Any
Note
due to the unexpectedness of List(1, 2, 3).isInstanceOf[List[String]] returning true and x.isInstanceOf[A] where A is a type parameter or abstract member returning true, these forms issue a warning.
final def ne(arg0: AnyRef): Boolean
Equivalent to !(this eq that).
Equivalent to !(this eq that).
returns
true if the argument is not a reference to the receiver object; false otherwise.
Definition Classes
AnyRef
def newArray(len: Int): Array[T]
Produces a new array with element type T and length len
Produces a new array with element type T and length len
Definition Classes
ClassTag
final def notify(): Unit
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
Definition Classes
AnyRef
Annotations
@native()
Note
not specified by SLS as a member of AnyRef
final def notifyAll(): Unit
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
Definition Classes
AnyRef
Annotations
@native()
Note
not specified by SLS as a member of AnyRef
final def synchronized[T0](arg0: => T0): T0
Executes the code in body with an exclusive lock on this.
Executes the code in body with an exclusive lock on this.
returns
the result of body
Definition Classes
AnyRef
def toString(): String
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
returns
a String representation of the object.
Definition Classes
ClassTag → AnyRef → Any
def typeArguments: List[Manifest[_]]
Definition Classes
Manifest → ClassManifestDeprecatedApis
def unapply(x: Any): Option[T]
A ClassTag[T] can serve as an extractor that matches only objects of type T.
A ClassTag[T] can serve as an extractor that matches only objects of type T.
The compiler tries to turn unchecked type tests in pattern matches into checked ones by wrapping a (_: T) type pattern as ct(_: T), where ct is the ClassTag[T] instance. Type tests necessary before calling other extractors are treated similarly. SomeExtractor(...) is turned into ct(SomeExtractor(...)) if T in SomeExtractor.unapply(x: T) is uncheckable, but we have an instance of ClassTag[T].
Definition Classes
ClassTag
final def wait(): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
Note
not specified by SLS as a member of AnyRef
final def wait(arg0: Long, arg1: Int): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
Note
not specified by SLS as a member of AnyRef
final def wait(arg0: Long): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException]) @native()
Note
not specified by SLS as a member of AnyRef
def wrap: ClassTag[Array[T]]
Produces a ClassTag that knows how to instantiate an Array[Array[T]]
Produces a ClassTag that knows how to instantiate an Array[Array[T]]
Definition Classes
ClassTag

Deprecated Value Members

def <:<(that: ClassManifest[_]): Boolean
Tests whether the type represented by this manifest is a subtype of the type represented by that manifest, subject to the limitations described in the header.
Tests whether the type represented by this manifest is a subtype of the type represented by that manifest, subject to the limitations described in the header.
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use scala.reflect.runtime.universe.TypeTag for subtype checking instead
def >:>(that: ClassManifest[_]): Boolean
Tests whether the type represented by this manifest is a supertype of the type represented by that manifest, subject to the limitations described in the header.
Tests whether the type represented by this manifest is a supertype of the type represented by that manifest, subject to the limitations described in the header.
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use scala.reflect.runtime.universe.TypeTag for subtype checking instead
def erasure: Class[_]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use runtimeClass instead
def formatted(fmtstr: String): String
Returns string formatted according to given format string.
Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).
Implicit
This member is added by an implicit conversion from Manifest[T] toStringFormat[Manifest[T]] performed by method StringFormat in scala.Predef.
Definition Classes
StringFormat
Annotations
@deprecated @inline()
Deprecated
(Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.
def newArray2(len: Int): Array[Array[T]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.newArray instead
def newArray3(len: Int): Array[Array[Array[T]]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.wrap.newArray instead
def newArray4(len: Int): Array[Array[Array[Array[T]]]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.wrap.wrap.newArray instead
def newArray5(len: Int): Array[Array[Array[Array[Array[T]]]]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.wrap.wrap.wrap.newArray instead
def newArrayBuilder(): ArrayBuilder[T]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use ArrayBuilder.make(this) instead
def newWrappedArray(len: Int): ArraySeq[T]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) create WrappedArray directly instead
def →[B](y: B): (Manifest[T], B)
Implicit
This member is added by an implicit conversion from Manifest[T] toArrowAssoc[Manifest[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from ClassTag[T]

Value Members

abstract def runtimeClass: Class[_]
A class representing the type U to which T would be erased.
A class representing the type U to which T would be erased. Note that there is no subtyping relationship between T and U.
Definition Classes
ClassTag
def newArray(len: Int): Array[T]
Produces a new array with element type T and length len
Produces a new array with element type T and length len
Definition Classes
ClassTag
def toString(): String
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
returns
a String representation of the object.
Definition Classes
ClassTag → AnyRef → Any
def unapply(x: Any): Option[T]
A ClassTag[T] can serve as an extractor that matches only objects of type T.
A ClassTag[T] can serve as an extractor that matches only objects of type T.
The compiler tries to turn unchecked type tests in pattern matches into checked ones by wrapping a (_: T) type pattern as ct(_: T), where ct is the ClassTag[T] instance. Type tests necessary before calling other extractors are treated similarly. SomeExtractor(...) is turned into ct(SomeExtractor(...)) if T in SomeExtractor.unapply(x: T) is uncheckable, but we have an instance of ClassTag[T].
Definition Classes
ClassTag
def wrap: ClassTag[Array[T]]
Produces a ClassTag that knows how to instantiate an Array[Array[T]]
Produces a ClassTag that knows how to instantiate an Array[Array[T]]
Definition Classes
ClassTag

Inherited from ClassManifestDeprecatedApis[T]

Value Members

def argString: String
Attributes
protected
Definition Classes
ClassManifestDeprecatedApis
def arrayClass[A](tp: Class[_]): Class[Array[A]]
Attributes
protected
Definition Classes
ClassManifestDeprecatedApis
def <:<(that: ClassManifest[_]): Boolean
Tests whether the type represented by this manifest is a subtype of the type represented by that manifest, subject to the limitations described in the header.
Tests whether the type represented by this manifest is a subtype of the type represented by that manifest, subject to the limitations described in the header.
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use scala.reflect.runtime.universe.TypeTag for subtype checking instead
def >:>(that: ClassManifest[_]): Boolean
Tests whether the type represented by this manifest is a supertype of the type represented by that manifest, subject to the limitations described in the header.
Tests whether the type represented by this manifest is a supertype of the type represented by that manifest, subject to the limitations described in the header.
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use scala.reflect.runtime.universe.TypeTag for subtype checking instead
def erasure: Class[_]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use runtimeClass instead
def newArray2(len: Int): Array[Array[T]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.newArray instead
def newArray3(len: Int): Array[Array[Array[T]]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.wrap.newArray instead
def newArray4(len: Int): Array[Array[Array[Array[T]]]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.wrap.wrap.newArray instead
def newArray5(len: Int): Array[Array[Array[Array[Array[T]]]]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.wrap.wrap.wrap.newArray instead
def newArrayBuilder(): ArrayBuilder[T]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use ArrayBuilder.make(this) instead
def newWrappedArray(len: Int): ArraySeq[T]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) create WrappedArray directly instead

Inherited from AnyRef

Value Members

final def !=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
returns
true if !(this == that), false otherwise.
Definition Classes
AnyRef → Any
final def ##: Int
Equivalent to x.hashCode except for boxed numeric types and null.
Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.
returns
a hash value consistent with ==
Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
returns
true if the receiver object is equivalent to the argument; false otherwise.
Definition Classes
AnyRef → Any
def clone(): AnyRef
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the clone method is platform dependent.
returns
a copy of the receiver object.
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.CloneNotSupportedException]) @native()
Note
not specified by SLS as a member of AnyRef
final def eq(arg0: AnyRef): Boolean
Tests whether the argument (that) is a reference to the receiver object (this).
Tests whether the argument (that) is a reference to the receiver object (this).
The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:
- It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
- For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
- null.eq(null) returns true.
When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).
returns
true if the argument is a reference to the receiver object; false otherwise.
Definition Classes
AnyRef
def finalize(): Unit
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.Throwable])
Note
not specified by SLS as a member of AnyRef
final def getClass(): Class[_ <: AnyRef]
Returns the runtime class representation of the object.
Returns the runtime class representation of the object.
returns
a class object corresponding to the runtime type of the receiver.
Definition Classes
AnyRef → Any
Annotations
@native()
final def ne(arg0: AnyRef): Boolean
Equivalent to !(this eq that).
Equivalent to !(this eq that).
returns
true if the argument is not a reference to the receiver object; false otherwise.
Definition Classes
AnyRef
final def notify(): Unit
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
Definition Classes
AnyRef
Annotations
@native()
Note
not specified by SLS as a member of AnyRef
final def notifyAll(): Unit
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
Definition Classes
AnyRef
Annotations
@native()
Note
not specified by SLS as a member of AnyRef
final def synchronized[T0](arg0: => T0): T0
Executes the code in body with an exclusive lock on this.
Executes the code in body with an exclusive lock on this.
returns
the result of body
Definition Classes
AnyRef
final def wait(): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
Note
not specified by SLS as a member of AnyRef
final def wait(arg0: Long, arg1: Int): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
Note
not specified by SLS as a member of AnyRef
final def wait(arg0: Long): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException]) @native()
Note
not specified by SLS as a member of AnyRef

Inherited from Any

Value Members

final def asInstanceOf[T0]: T0
Cast the receiver object to be of type T0.
Cast the receiver object to be of type T0.
Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.
returns
the receiver object.
Definition Classes
Any
Exceptions thrown
ClassCastException if the receiver object is not an instance of the erasure of type T0.
final def isInstanceOf[T0]: Boolean
Test whether the dynamic type of the receiver object has the same erasure as T0.
Test whether the dynamic type of the receiver object has the same erasure as T0.
Depending on what T0 is, the test is done in one of the below ways:
- T0 is a non-parameterized class type, e.g. BigDecimal: this method returns true if the value of the receiver object is a BigDecimal or a subtype of BigDecimal.
- T0 is a parameterized class type, e.g. List[Int]: this method returns true if the value of the receiver object is some List[X] for any X. For example, List(1, 2, 3).isInstanceOf[List[String]] will return true.
- T0 is some singleton type x.type or literal x: this method returns this.eq(x). For example, x.isInstanceOf[1] is equivalent to x.eq(1)
- T0 is an intersection X with Y or X & Y: this method is equivalent to x.isInstanceOf[X] && x.isInstanceOf[Y]
- T0 is a union X | Y: this method is equivalent to x.isInstanceOf[X] || x.isInstanceOf[Y]
- T0 is a type parameter or an abstract type member: this method is equivalent to isInstanceOf[U] where U is T0's upper bound, Any if T0 is unbounded. For example, x.isInstanceOf[A] where A is an unbounded type parameter will return true for any value of x.
This is exactly equivalent to the type pattern _: T0
returns
true if the receiver object is an instance of erasure of type T0; false otherwise.
Definition Classes
Any
Note
due to the unexpectedness of List(1, 2, 3).isInstanceOf[List[String]] returning true and x.isInstanceOf[A] where A is a type parameter or abstract member returning true, these forms issue a warning.

Inherited by implicit conversion any2stringadd fromManifest[T] to any2stringadd[Manifest[T]]

Value Members

def +(other: String): String
Implicit
This member is added by an implicit conversion from Manifest[T] toany2stringadd[Manifest[T]] performed by method any2stringadd in scala.Predef.
Definition Classes
any2stringadd

Inherited by implicit conversion StringFormat fromManifest[T] to StringFormat[Manifest[T]]

Value Members

def formatted(fmtstr: String): String
Returns string formatted according to given format string.
Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).
Implicit
This member is added by an implicit conversion from Manifest[T] toStringFormat[Manifest[T]] performed by method StringFormat in scala.Predef.
Definition Classes
StringFormat
Annotations
@deprecated @inline()
Deprecated
(Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

Inherited by implicit conversion Ensuring fromManifest[T] to Ensuring[Manifest[T]]

Value Members

def ensuring(cond: (Manifest[T]) => Boolean, msg: => Any): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: (Manifest[T]) => Boolean): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean, msg: => Any): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring

Inherited by implicit conversion ArrowAssoc fromManifest[T] to ArrowAssoc[Manifest[T]]

Value Members

def ->[B](y: B): (Manifest[T], B)
Implicit
This member is added by an implicit conversion from Manifest[T] toArrowAssoc[Manifest[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc
Annotations
@inline()
def →[B](y: B): (Manifest[T], B)
Implicit
This member is added by an implicit conversion from Manifest[T] toArrowAssoc[Manifest[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Ungrouped

abstract def runtimeClass: Class[_]
A class representing the type U to which T would be erased.
A class representing the type U to which T would be erased. Note that there is no subtyping relationship between T and U.
Definition Classes
ClassTag
final def !=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
returns
true if !(this == that), false otherwise.
Definition Classes
AnyRef → Any
final def ##: Int
Equivalent to x.hashCode except for boxed numeric types and null.
Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.
returns
a hash value consistent with ==
Definition Classes
AnyRef → Any
def +(other: String): String
Implicit
This member is added by an implicit conversion from Manifest[T] toany2stringadd[Manifest[T]] performed by method any2stringadd in scala.Predef.
Definition Classes
any2stringadd
def ->[B](y: B): (Manifest[T], B)
Implicit
This member is added by an implicit conversion from Manifest[T] toArrowAssoc[Manifest[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc
Annotations
@inline()
final def ==(arg0: Any): Boolean
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
returns
true if the receiver object is equivalent to the argument; false otherwise.
Definition Classes
AnyRef → Any
def argString: String
Attributes
protected
Definition Classes
ClassManifestDeprecatedApis
def arrayClass[A](tp: Class[_]): Class[Array[A]]
Attributes
protected
Definition Classes
ClassManifestDeprecatedApis
def arrayManifest: Manifest[Array[T]]
Definition Classes
Manifest → ClassManifestDeprecatedApis
final def asInstanceOf[T0]: T0
Cast the receiver object to be of type T0.
Cast the receiver object to be of type T0.
Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.
returns
the receiver object.
Definition Classes
Any
Exceptions thrown
ClassCastException if the receiver object is not an instance of the erasure of type T0.
def canEqual(that: Any): Boolean
A method that should be called from every well-designed equals method that is open to be overridden in a subclass.
A method that should be called from every well-designed equals method that is open to be overridden in a subclass. See Programming in Scala, Chapter 28 for discussion and design.
that
the value being probed for possible equality
returns
true if this instance can possibly equal that, otherwise false
Definition Classes
Manifest → ClassTag → Equals → ClassManifestDeprecatedApis
def clone(): AnyRef
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the clone method is platform dependent.
returns
a copy of the receiver object.
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.CloneNotSupportedException]) @native()
Note
not specified by SLS as a member of AnyRef
def ensuring(cond: (Manifest[T]) => Boolean, msg: => Any): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: (Manifest[T]) => Boolean): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean, msg: => Any): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean): Manifest[T]
Implicit
This member is added by an implicit conversion from Manifest[T] toEnsuring[Manifest[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
final def eq(arg0: AnyRef): Boolean
Tests whether the argument (that) is a reference to the receiver object (this).
Tests whether the argument (that) is a reference to the receiver object (this).
The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:
- It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
- For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
- null.eq(null) returns true.
When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).
returns
true if the argument is a reference to the receiver object; false otherwise.
Definition Classes
AnyRef
def equals(that: Any): Boolean
Note: testing for erasure here is important, as it is many times faster than <:< and rules out most comparisons.
Note: testing for erasure here is important, as it is many times faster than <:< and rules out most comparisons.
Definition Classes
Manifest → ClassTag → Equals → AnyRef → Any
def finalize(): Unit
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.Throwable])
Note
not specified by SLS as a member of AnyRef
final def getClass(): Class[_ <: AnyRef]
Returns the runtime class representation of the object.
Returns the runtime class representation of the object.
returns
a class object corresponding to the runtime type of the receiver.
Definition Classes
AnyRef → Any
Annotations
@native()
def hashCode(): Int
The hashCode method for reference types.
The hashCode method for reference types. See hashCode in scala.Any.
returns
the hash code value for this object.
Definition Classes
Manifest → ClassTag → AnyRef → Any
final def isInstanceOf[T0]: Boolean
Test whether the dynamic type of the receiver object has the same erasure as T0.
Test whether the dynamic type of the receiver object has the same erasure as T0.
Depending on what T0 is, the test is done in one of the below ways:
- T0 is a non-parameterized class type, e.g. BigDecimal: this method returns true if the value of the receiver object is a BigDecimal or a subtype of BigDecimal.
- T0 is a parameterized class type, e.g. List[Int]: this method returns true if the value of the receiver object is some List[X] for any X. For example, List(1, 2, 3).isInstanceOf[List[String]] will return true.
- T0 is some singleton type x.type or literal x: this method returns this.eq(x). For example, x.isInstanceOf[1] is equivalent to x.eq(1)
- T0 is an intersection X with Y or X & Y: this method is equivalent to x.isInstanceOf[X] && x.isInstanceOf[Y]
- T0 is a union X | Y: this method is equivalent to x.isInstanceOf[X] || x.isInstanceOf[Y]
- T0 is a type parameter or an abstract type member: this method is equivalent to isInstanceOf[U] where U is T0's upper bound, Any if T0 is unbounded. For example, x.isInstanceOf[A] where A is an unbounded type parameter will return true for any value of x.
This is exactly equivalent to the type pattern _: T0
returns
true if the receiver object is an instance of erasure of type T0; false otherwise.
Definition Classes
Any
Note
due to the unexpectedness of List(1, 2, 3).isInstanceOf[List[String]] returning true and x.isInstanceOf[A] where A is a type parameter or abstract member returning true, these forms issue a warning.
final def ne(arg0: AnyRef): Boolean
Equivalent to !(this eq that).
Equivalent to !(this eq that).
returns
true if the argument is not a reference to the receiver object; false otherwise.
Definition Classes
AnyRef
def newArray(len: Int): Array[T]
Produces a new array with element type T and length len
Produces a new array with element type T and length len
Definition Classes
ClassTag
final def notify(): Unit
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
Definition Classes
AnyRef
Annotations
@native()
Note
not specified by SLS as a member of AnyRef
final def notifyAll(): Unit
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
Definition Classes
AnyRef
Annotations
@native()
Note
not specified by SLS as a member of AnyRef
final def synchronized[T0](arg0: => T0): T0
Executes the code in body with an exclusive lock on this.
Executes the code in body with an exclusive lock on this.
returns
the result of body
Definition Classes
AnyRef
def toString(): String
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
returns
a String representation of the object.
Definition Classes
ClassTag → AnyRef → Any
def typeArguments: List[Manifest[_]]
Definition Classes
Manifest → ClassManifestDeprecatedApis
def unapply(x: Any): Option[T]
A ClassTag[T] can serve as an extractor that matches only objects of type T.
A ClassTag[T] can serve as an extractor that matches only objects of type T.
The compiler tries to turn unchecked type tests in pattern matches into checked ones by wrapping a (_: T) type pattern as ct(_: T), where ct is the ClassTag[T] instance. Type tests necessary before calling other extractors are treated similarly. SomeExtractor(...) is turned into ct(SomeExtractor(...)) if T in SomeExtractor.unapply(x: T) is uncheckable, but we have an instance of ClassTag[T].
Definition Classes
ClassTag
final def wait(): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
Note
not specified by SLS as a member of AnyRef
final def wait(arg0: Long, arg1: Int): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
Note
not specified by SLS as a member of AnyRef
final def wait(arg0: Long): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException]) @native()
Note
not specified by SLS as a member of AnyRef
def wrap: ClassTag[Array[T]]
Produces a ClassTag that knows how to instantiate an Array[Array[T]]
Produces a ClassTag that knows how to instantiate an Array[Array[T]]
Definition Classes
ClassTag
def <:<(that: ClassManifest[_]): Boolean
Tests whether the type represented by this manifest is a subtype of the type represented by that manifest, subject to the limitations described in the header.
Tests whether the type represented by this manifest is a subtype of the type represented by that manifest, subject to the limitations described in the header.
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use scala.reflect.runtime.universe.TypeTag for subtype checking instead
def >:>(that: ClassManifest[_]): Boolean
Tests whether the type represented by this manifest is a supertype of the type represented by that manifest, subject to the limitations described in the header.
Tests whether the type represented by this manifest is a supertype of the type represented by that manifest, subject to the limitations described in the header.
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use scala.reflect.runtime.universe.TypeTag for subtype checking instead
def erasure: Class[_]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use runtimeClass instead
def formatted(fmtstr: String): String
Returns string formatted according to given format string.
Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).
Implicit
This member is added by an implicit conversion from Manifest[T] toStringFormat[Manifest[T]] performed by method StringFormat in scala.Predef.
Definition Classes
StringFormat
Annotations
@deprecated @inline()
Deprecated
(Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.
def newArray2(len: Int): Array[Array[T]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.newArray instead
def newArray3(len: Int): Array[Array[Array[T]]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.wrap.newArray instead
def newArray4(len: Int): Array[Array[Array[Array[T]]]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.wrap.wrap.newArray instead
def newArray5(len: Int): Array[Array[Array[Array[Array[T]]]]]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use wrap.wrap.wrap.wrap.newArray instead
def newArrayBuilder(): ArrayBuilder[T]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) use ArrayBuilder.make(this) instead
def newWrappedArray(len: Int): ArraySeq[T]
Definition Classes
ClassManifestDeprecatedApis
Annotations
@deprecated
Deprecated
(Since version 2.10.0) create WrappedArray directly instead
def →[B](y: B): (Manifest[T], B)
Implicit
This member is added by an implicit conversion from Manifest[T] toArrowAssoc[Manifest[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Packages

Package structure

Automatic imports

Manifest

Companion object Manifest

trait Manifest[T] extends ClassManifest[T] with Equals

Abstract Value Members

Concrete Value Members

Deprecated Value Members

Inherited from ClassTag[T]

Value Members

Inherited from ClassManifestDeprecatedApis[T]

Value Members

Inherited from AnyRef

Value Members

Inherited from Any

Value Members

Inherited by implicit conversion any2stringadd fromManifest[T] to any2stringadd[Manifest[T]]

Value Members

Inherited by implicit conversion StringFormat fromManifest[T] to StringFormat[Manifest[T]]

Value Members

Inherited by implicit conversion Ensuring fromManifest[T] to Ensuring[Manifest[T]]

Value Members

Inherited by implicit conversion ArrowAssoc fromManifest[T] to ArrowAssoc[Manifest[T]]

Value Members

Ungrouped

Packages

Package structure

Automatic imports

Manifest

Companion object Manifest

trait Manifest[T] extends ClassManifest[T] with Equals

Abstract Value Members

Concrete Value Members

Deprecated Value Members

Inherited from ClassTag[T]

Value Members

Inherited from ClassManifestDeprecatedApis[T]

Value Members

Inherited from AnyRef

Value Members

Inherited from Any

Value Members

Inherited by implicit conversion any2stringadd fromManifest[T] to any2stringadd[Manifest[T]]

Value Members

Inherited by implicit conversion StringFormat fromManifest[T] to StringFormat[Manifest[T]]

Value Members

Inherited by implicit conversion Ensuring fromManifest[T] to Ensuring[Manifest[T]]

Value Members

Inherited by implicit conversion ArrowAssoc fromManifest[T] to ArrowAssoc[Manifest[T]]

Value Members

Ungrouped

Manifest