Function
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package scala
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).
the object to compare against this object for equality.
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.
Given a sequence of functions f1, ..., fn, return the
function f1 andThen ... andThen fn.
Given a sequence of functions f1, ..., fn, return the
function f1 andThen ... andThen fn.
The given sequence of functions
Create a copy of the receiver object.
The constant function
Tests whether the argument (arg0) is a reference to the receiver object (this).
Tests whether the argument (arg0) 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.
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.
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.
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.
Tupling for functions of arity 5.
Tupling for functions of arity 5. This transforms a function of arity 5 into a unary function that takes a 5-tuple of arguments.
Tupling for functions of arity 4.
Tupling for functions of arity 4. This transforms a function of arity 4 into a unary function that takes a 4-tuple of arguments.
Tupling for functions of arity 3.
Tupling for functions of arity 3. This transforms a function of arity 3 into a unary function that takes a triple of arguments.
Tupling for functions of arity 2.
Tupling for functions of arity 2. This transforms a function of arity 2 into a unary function that takes a pair of arguments.
These functions are slotted for deprecation, but it is on hold pending superior type inference for tupling anonymous functions.
Uncurrying for functions of arity 5.
Uncurrying for functions of arity 4.
Uncurrying for functions of arity 3.
Uncurrying for functions of arity 2.
Uncurrying for functions of arity 2. This transforms a unary function returning another unary function into a function of arity 2.
Turns a function A => Option[B] into a PartialFunction[A, B].
Turns a function A => Option[B] into a PartialFunction[A, B].
Important note: this transformation implies the original function
may be called 2 or more times on each logical invocation, because the
only way to supply an implementation of isDefinedAt is to call the
function and examine the return value.
See also scala.PartialFunction, method applyOrElse.
a function T => Option[R]
a partial function defined for those inputs where
f returns Some(_) and undefined where f returns None.
scala.PartialFunction, method lift.
Un-tupling for functions of arity 5.
Un-tupling for functions of arity 5. This transforms a function taking a 5-tuple of arguments into a function of arity 5 which takes each argument separately.
Un-tupling for functions of arity 4.
Un-tupling for functions of arity 4. This transforms a function taking a 4-tuple of arguments into a function of arity 4 which takes each argument separately.
Un-tupling for functions of arity 3.
Un-tupling for functions of arity 3. This transforms a function taking a triple of arguments into a ternary function which takes each argument separately.
Un-tupling for functions of arity 2.
Un-tupling for functions of arity 2. This transforms a function taking a pair of arguments into a binary function which takes each argument separately.
A module defining utility methods for higher-order functional programming.
1.0, 29/11/2006