OptionOrdering

trait OptionOrdering[T] extends Ordering[Option[T]]

Source: Ordering.scala

Linear Supertypes

Ordering[Option[T]], PartialOrdering[Option[T]], Equiv[Option[T]], Serializable, java.io.Serializable, Comparator[Option[T]], AnyRef, Any

Ordering

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By Inheritance

Inherited

OptionOrdering
Ordering
PartialOrdering
Equiv
Serializable
Serializable
Comparator
AnyRef
Any

Implicitly

by any2stringadd
by StringFormat
by Ensuring
by ArrowAssoc

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Visibility

Public
All

Type Members

class Ops extends AnyRef
This inner class defines comparison operators available for T.
This inner class defines comparison operators available for T.

Definition Classes
Ordering

Abstract Value Members

abstract def optionOrdering: Ordering[T]

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 OptionOrdering[T] to any2stringadd[OptionOrdering[T]] performed by method any2stringadd in scala.Predef.
Definition Classes
any2stringadd
def ->[B](y: B): (OptionOrdering[T], B)

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to ArrowAssoc[OptionOrdering[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
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 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( ... ) @native()
Note
not specified by SLS as a member of AnyRef
def compare(x: Option[T], y: Option[T]): Int
Returns an integer whose sign communicates how x compares to y.
Returns an integer whose sign communicates how x compares to y.
The result sign has the following meaning:
- negative if x < y
- positive if x > y
- zero otherwise (if x == y)
Definition Classes
OptionOrdering → Ordering → Comparator
def ensuring(cond: (OptionOrdering[T]) ⇒ Boolean, msg: ⇒ Any): OptionOrdering[T]

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to Ensuring[OptionOrdering[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: (OptionOrdering[T]) ⇒ Boolean): OptionOrdering[T]

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

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to Ensuring[OptionOrdering[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean): OptionOrdering[T]

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to Ensuring[OptionOrdering[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(obj: Any): Boolean
The equality method for reference types.
The equality method for reference types. Default implementation delegates to eq.
See also equals in scala.Any.
returns
true if the receiver object is equivalent to the argument; false otherwise.

Definition Classes
OptionOrdering → Comparator → AnyRef → Any
def equiv(x: Option[T], y: Option[T]): Boolean
Return true if x == y in the ordering.
Return true if x == y in the ordering.

Definition Classes
Ordering → PartialOrdering → Equiv
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[_]
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 gt(x: Option[T], y: Option[T]): Boolean
Return true if x > y in the ordering.
Return true if x > y in the ordering.

Definition Classes
Ordering → PartialOrdering
def gteq(x: Option[T], y: Option[T]): Boolean
Return true if x >= y in the ordering.
Return true if x >= y in the ordering.

Definition Classes
Ordering → PartialOrdering
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
OptionOrdering → AnyRef → Any
final def isInstanceOf[T0]: Boolean
Test whether the dynamic type of the receiver object is T0.
Test whether the dynamic type of the receiver object is T0.
Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. 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 specified type.
returns
true if the receiver object is an instance of erasure of type T0; false otherwise.

Definition Classes
Any
def lt(x: Option[T], y: Option[T]): Boolean
Return true if x < y in the ordering.
Return true if x < y in the ordering.

Definition Classes
Ordering → PartialOrdering
def lteq(x: Option[T], y: Option[T]): Boolean
Return true if x <= y in the ordering.
Return true if x <= y in the ordering.

Definition Classes
Ordering → PartialOrdering
def max(x: Option[T], y: Option[T]): Option[T]
Return x if x >= y, otherwise y.
Return x if x >= y, otherwise y.

Definition Classes
Ordering
def min(x: Option[T], y: Option[T]): Option[T]
Return x if x <= y, otherwise y.
Return x if x <= y, otherwise y.

Definition Classes
Ordering
implicit def mkOrderingOps(lhs: Option[T]): Ops
This implicit method augments T with the comparison operators defined in scala.math.Ordering.Ops.
This implicit method augments T with the comparison operators defined in scala.math.Ordering.Ops.

Definition Classes
Ordering
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
def on[U](f: (U) ⇒ Option[T]): Ordering[U]
Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:
Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:
```
def compare(x:U, y:U) = Ordering[T].compare(f(x), f(y))
```
Definition Classes
Ordering
def reverse: Ordering[Option[T]]
Return the opposite ordering of this one.
Return the opposite ordering of this one.

Definition Classes
Ordering → PartialOrdering
def reversed(): Comparator[Option[T]]

Definition Classes
Comparator
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def thenComparing[U <: Comparable[_ >: U]](arg0: java.util.function.Function[_ >: Option[T], _ <: U]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparing[U](arg0: java.util.function.Function[_ >: Option[T], _ <: U], arg1: Comparator[_ >: U]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparing(arg0: Comparator[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparingDouble(arg0: ToDoubleFunction[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparingInt(arg0: ToIntFunction[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparingLong(arg0: ToLongFunction[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
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
AnyRef → Any
def tryCompare(x: Option[T], y: Option[T]): Some[Int]
Returns whether a comparison between x and y is defined, and if so the result of compare(x, y).
Returns whether a comparison between x and y is defined, and if so the result of compare(x, y).

Definition Classes
Ordering → PartialOrdering
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... ) @native()
def →[B](y: B): (OptionOrdering[T], B)

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to ArrowAssoc[OptionOrdering[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc

Deprecated 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 OptionOrdering[T] to StringFormat[OptionOrdering[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 from Ordering[Option[T]]

Value Members

def equiv(x: Option[T], y: Option[T]): Boolean
Return true if x == y in the ordering.
Return true if x == y in the ordering.

Definition Classes
Ordering → PartialOrdering → Equiv
def gt(x: Option[T], y: Option[T]): Boolean
Return true if x > y in the ordering.
Return true if x > y in the ordering.

Definition Classes
Ordering → PartialOrdering
def gteq(x: Option[T], y: Option[T]): Boolean
Return true if x >= y in the ordering.
Return true if x >= y in the ordering.

Definition Classes
Ordering → PartialOrdering
def lt(x: Option[T], y: Option[T]): Boolean
Return true if x < y in the ordering.
Return true if x < y in the ordering.

Definition Classes
Ordering → PartialOrdering
def lteq(x: Option[T], y: Option[T]): Boolean
Return true if x <= y in the ordering.
Return true if x <= y in the ordering.

Definition Classes
Ordering → PartialOrdering
def max(x: Option[T], y: Option[T]): Option[T]
Return x if x >= y, otherwise y.
Return x if x >= y, otherwise y.

Definition Classes
Ordering
def min(x: Option[T], y: Option[T]): Option[T]
Return x if x <= y, otherwise y.
Return x if x <= y, otherwise y.

Definition Classes
Ordering
implicit def mkOrderingOps(lhs: Option[T]): Ops
This implicit method augments T with the comparison operators defined in scala.math.Ordering.Ops.
This implicit method augments T with the comparison operators defined in scala.math.Ordering.Ops.

Definition Classes
Ordering
def on[U](f: (U) ⇒ Option[T]): Ordering[U]
Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:
Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:
```
def compare(x:U, y:U) = Ordering[T].compare(f(x), f(y))
```
Definition Classes
Ordering
def reverse: Ordering[Option[T]]
Return the opposite ordering of this one.
Return the opposite ordering of this one.

Definition Classes
Ordering → PartialOrdering
def tryCompare(x: Option[T], y: Option[T]): Some[Int]
Returns whether a comparison between x and y is defined, and if so the result of compare(x, y).
Returns whether a comparison between x and y is defined, and if so the result of compare(x, y).

Definition Classes
Ordering → PartialOrdering

Inherited from Comparator[Option[T]]

Value Members

def reversed(): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparing[U <: Comparable[_ >: U]](arg0: java.util.function.Function[_ >: Option[T], _ <: U]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparing[U](arg0: java.util.function.Function[_ >: Option[T], _ <: U], arg1: Comparator[_ >: U]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparing(arg0: Comparator[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparingDouble(arg0: ToDoubleFunction[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparingInt(arg0: ToIntFunction[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparingLong(arg0: ToLongFunction[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator

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( ... ) @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[_]
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

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
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... ) @native()

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 is T0.
Test whether the dynamic type of the receiver object is T0.
Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. 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 specified type.
returns
true if the receiver object is an instance of erasure of type T0; false otherwise.

Definition Classes
Any

Inherited by implicit conversion any2stringadd from OptionOrdering[T] to any2stringadd[OptionOrdering[T]]

Value Members

def +(other: String): String

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to any2stringadd[OptionOrdering[T]] performed by method any2stringadd in scala.Predef.
Definition Classes
any2stringadd

Inherited by implicit conversion StringFormat from OptionOrdering[T] to StringFormat[OptionOrdering[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 OptionOrdering[T] to StringFormat[OptionOrdering[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 from OptionOrdering[T] to Ensuring[OptionOrdering[T]]

Value Members

def ensuring(cond: (OptionOrdering[T]) ⇒ Boolean, msg: ⇒ Any): OptionOrdering[T]

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to Ensuring[OptionOrdering[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: (OptionOrdering[T]) ⇒ Boolean): OptionOrdering[T]

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

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to Ensuring[OptionOrdering[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean): OptionOrdering[T]

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to Ensuring[OptionOrdering[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring

Inherited by implicit conversion ArrowAssoc from OptionOrdering[T] to ArrowAssoc[OptionOrdering[T]]

Value Members

def ->[B](y: B): (OptionOrdering[T], B)

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to ArrowAssoc[OptionOrdering[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc
Annotations
@inline()
def →[B](y: B): (OptionOrdering[T], B)

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to ArrowAssoc[OptionOrdering[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc

Ungrouped

class Ops extends AnyRef
This inner class defines comparison operators available for T.
This inner class defines comparison operators available for T.

Definition Classes
Ordering

abstract def optionOrdering: Ordering[T]
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 OptionOrdering[T] to any2stringadd[OptionOrdering[T]] performed by method any2stringadd in scala.Predef.
Definition Classes
any2stringadd
def ->[B](y: B): (OptionOrdering[T], B)

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to ArrowAssoc[OptionOrdering[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
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 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( ... ) @native()
Note
not specified by SLS as a member of AnyRef
def compare(x: Option[T], y: Option[T]): Int
Returns an integer whose sign communicates how x compares to y.
Returns an integer whose sign communicates how x compares to y.
The result sign has the following meaning:
- negative if x < y
- positive if x > y
- zero otherwise (if x == y)
Definition Classes
OptionOrdering → Ordering → Comparator
def ensuring(cond: (OptionOrdering[T]) ⇒ Boolean, msg: ⇒ Any): OptionOrdering[T]

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to Ensuring[OptionOrdering[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: (OptionOrdering[T]) ⇒ Boolean): OptionOrdering[T]

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

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to Ensuring[OptionOrdering[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean): OptionOrdering[T]

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to Ensuring[OptionOrdering[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(obj: Any): Boolean
The equality method for reference types.
The equality method for reference types. Default implementation delegates to eq.
See also equals in scala.Any.
returns
true if the receiver object is equivalent to the argument; false otherwise.

Definition Classes
OptionOrdering → Comparator → AnyRef → Any
def equiv(x: Option[T], y: Option[T]): Boolean
Return true if x == y in the ordering.
Return true if x == y in the ordering.

Definition Classes
Ordering → PartialOrdering → Equiv
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[_]
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 gt(x: Option[T], y: Option[T]): Boolean
Return true if x > y in the ordering.
Return true if x > y in the ordering.

Definition Classes
Ordering → PartialOrdering
def gteq(x: Option[T], y: Option[T]): Boolean
Return true if x >= y in the ordering.
Return true if x >= y in the ordering.

Definition Classes
Ordering → PartialOrdering
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
OptionOrdering → AnyRef → Any
final def isInstanceOf[T0]: Boolean
Test whether the dynamic type of the receiver object is T0.
Test whether the dynamic type of the receiver object is T0.
Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. 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 specified type.
returns
true if the receiver object is an instance of erasure of type T0; false otherwise.

Definition Classes
Any
def lt(x: Option[T], y: Option[T]): Boolean
Return true if x < y in the ordering.
Return true if x < y in the ordering.

Definition Classes
Ordering → PartialOrdering
def lteq(x: Option[T], y: Option[T]): Boolean
Return true if x <= y in the ordering.
Return true if x <= y in the ordering.

Definition Classes
Ordering → PartialOrdering
def max(x: Option[T], y: Option[T]): Option[T]
Return x if x >= y, otherwise y.
Return x if x >= y, otherwise y.

Definition Classes
Ordering
def min(x: Option[T], y: Option[T]): Option[T]
Return x if x <= y, otherwise y.
Return x if x <= y, otherwise y.

Definition Classes
Ordering
implicit def mkOrderingOps(lhs: Option[T]): Ops
This implicit method augments T with the comparison operators defined in scala.math.Ordering.Ops.
This implicit method augments T with the comparison operators defined in scala.math.Ordering.Ops.

Definition Classes
Ordering
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
def on[U](f: (U) ⇒ Option[T]): Ordering[U]
Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:
Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:
```
def compare(x:U, y:U) = Ordering[T].compare(f(x), f(y))
```
Definition Classes
Ordering
def reverse: Ordering[Option[T]]
Return the opposite ordering of this one.
Return the opposite ordering of this one.

Definition Classes
Ordering → PartialOrdering
def reversed(): Comparator[Option[T]]

Definition Classes
Comparator
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def thenComparing[U <: Comparable[_ >: U]](arg0: java.util.function.Function[_ >: Option[T], _ <: U]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparing[U](arg0: java.util.function.Function[_ >: Option[T], _ <: U], arg1: Comparator[_ >: U]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparing(arg0: Comparator[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparingDouble(arg0: ToDoubleFunction[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparingInt(arg0: ToIntFunction[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
def thenComparingLong(arg0: ToLongFunction[_ >: Option[T]]): Comparator[Option[T]]

Definition Classes
Comparator
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
AnyRef → Any
def tryCompare(x: Option[T], y: Option[T]): Some[Int]
Returns whether a comparison between x and y is defined, and if so the result of compare(x, y).
Returns whether a comparison between x and y is defined, and if so the result of compare(x, y).

Definition Classes
Ordering → PartialOrdering
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... ) @native()
def →[B](y: B): (OptionOrdering[T], B)

Implicit
This member is added by an implicit conversion from OptionOrdering[T] to ArrowAssoc[OptionOrdering[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc
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 OptionOrdering[T] to StringFormat[OptionOrdering[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.

Packages

Package structure

Automatic imports

OptionOrdering

trait OptionOrdering[T] extends Ordering[Option[T]]

Type Members

Abstract Value Members

Concrete Value Members

Deprecated Value Members

Inherited from Ordering[Option[T]]

Value Members

Inherited from Comparator[Option[T]]

Value Members

Inherited from AnyRef

Value Members

Inherited from Any

Value Members

Inherited by implicit conversion any2stringadd from OptionOrdering[T] to any2stringadd[OptionOrdering[T]]

Value Members

Inherited by implicit conversion StringFormat from OptionOrdering[T] to StringFormat[OptionOrdering[T]]

Value Members

Inherited by implicit conversion Ensuring from OptionOrdering[T] to Ensuring[OptionOrdering[T]]

Value Members

Inherited by implicit conversion ArrowAssoc from OptionOrdering[T] to ArrowAssoc[OptionOrdering[T]]

Value Members

Ungrouped

Packages

Package structure

Automatic imports

OptionOrdering 

trait OptionOrdering[T] extends Ordering[Option[T]]

Type Members

Abstract Value Members

Concrete Value Members

Deprecated Value Members

Inherited from Ordering[Option[T]]

Value Members

Inherited from Comparator[Option[T]]

Value Members

Inherited from AnyRef

Value Members

Inherited from Any

Value Members

Inherited by implicit conversion any2stringadd from OptionOrdering[T] to any2stringadd[OptionOrdering[T]]

Value Members

Inherited by implicit conversion StringFormat from OptionOrdering[T] to StringFormat[OptionOrdering[T]]

Value Members

Inherited by implicit conversion Ensuring from OptionOrdering[T] to Ensuring[OptionOrdering[T]]

Value Members

Inherited by implicit conversion ArrowAssoc from OptionOrdering[T] to ArrowAssoc[OptionOrdering[T]]

Value Members

Ungrouped

OptionOrdering