Test two objects for inequality.
Test two objects for inequality.
true
if !(this == that), false otherwise.
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
.
a hash value consistent with ==
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)
.
true
if the receiver object is equivalent to the argument; false
otherwise.
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.
the receiver object.
ClassCastException
if the receiver object is not an instance of the erasure of type T0
.
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the clone
method is platform dependent.
a copy of the receiver object.
not specified by SLS as a member of AnyRef
Try to convert Select(qual, name) to a SelectFromTypeTree.
Try to convert Select(qual, name) to a SelectFromTypeTree.
Translate names in Select/Ident nodes to type names.
Translate names in Select/Ident nodes to type names.
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:
x
and y
of type AnyRef
, multiple invocations of
x.eq(y)
consistently returns true
or consistently returns false
.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
).
true
if the argument is a reference to the receiver object; false
otherwise.
The equality method for reference types.
Used in situations where you need to access value of an expression several times
Used in situations where you need to access value of an expression several times
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.
not specified by SLS as a member of AnyRef
A representation that corresponds to the dynamic class of the receiver object.
A representation that corresponds to the dynamic class of the receiver object.
The nature of the representation is platform dependent.
a representation that corresponds to the dynamic class of the receiver object.
not specified by SLS as a member of AnyRef
The hashCode method for reference types.
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.
true
if the receiver object is an instance of erasure of type T0
; false
otherwise.
Creates a tree representing new Object { stats }.
Creates a tree representing new Object { stats }. To make sure an anonymous subclass of Object is created, if there are no stats, a () is added.
Cast tree
to type pt
by creating
one of the calls of the form
Cast tree
to type pt
by creating
one of the calls of the form
x.asInstanceOf[pt
] up to phase uncurry
x.asInstanceOf[pt
]() if after uncurry but before erasure
x.$asInstanceOf[pt
]() if at or after erasure
Generate a cast for tree Tree representing Array with elem type elemtp to expected type pt.
Generate a cast for tree Tree representing Array with elem type elemtp to expected type pt.
Make forwarder to method target
, passing all parameters in params
Make forwarder to method target
, passing all parameters in params
Builds a fully attributed, synthetic import node.
Builds a fully attributed, synthetic import node.
import qualSym
.{name
=> toName
}
A creator for a call to a scala.reflect.Manifest or ClassManifest factory method.
A creator for a call to a scala.reflect.Manifest or ClassManifest factory method.
full or partial manifest (target will be Manifest or ClassManifest)
name of the factory method (e.g. "classType")
the type argument
value arguments
the tree
Create a method based on a Function
Create a method based on a Function
Used both to under -Ydelambdafy:method
create a lifted function and
under -Ydelambdafy:inline
to create the apply method on the anonymous
class.
It creates a method definition with value params cloned from the original lambda. Then it calls a supplied function to create the body and types the result. Finally everything is wrapped up in a DefDef
The owner for the new method
name for the new method
flags to be put on the method in addition to FINAL
Make a synchronized block on 'monitor'.
Make a synchronized block on 'monitor'.
Return the synchronized part of the double-checked locking idiom around the syncBody tree.
Return the synchronized part of the double-checked locking idiom around the syncBody tree. It guards with cond
and
synchronizes on clazz.this
. Additional statements can be included after initialization,
(outside the synchronized block).
The idiom works only if the condition is using a volatile field.
http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html
Builds a fully attributed, synthetic wildcard import node.
Builds a fully attributed, synthetic wildcard import node.
Applies a wrapArray call to an array, making it a WrappedArray.
Applies a wrapArray call to an array, making it a WrappedArray. Don't let a reference type parameter be inferred, in case it's a singleton: apply the element type directly.
Equivalent to !(this eq that)
.
Equivalent to !(this eq that)
.
true
if the argument is not a reference to the receiver object; false
otherwise.
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.
not specified by SLS as a member of AnyRef
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.
not specified by SLS as a member of AnyRef
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.
a String representation of the object.
Tree generation, usually based on existing symbols.