play.libs

Class F

java.lang.Object

play.libs.F

public class F
extends java.lang.Object

Defines a set of functional programming style helpers.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	F.Either<L,R> Represents a value of one of two possible types (a disjoint union)
static interface	F.Function3<A,B,C,R> A Function with 3 arguments.
static class	F.Promise<A> Deprecated. Use the JDK8 CompletionStage instead. When migrating to CompletionStage, Promise implements CompletionStage, so it may be easier to first migrate all the existing method calls on the promise, such as map/flatMap, which are also deprecated but include migration instructions in the deprecation message.
static class	F.PromiseTimeoutException Exception thrown when an operation times out.
static class	F.RedeemablePromise<A> Deprecated. Use CompletableFuture instead.
static class	F.Tuple<A,B> A pair - a tuple of the types A and B.
static class	F.Tuple3<A,B,C> A tuple of A,B,C
static class	F.Tuple4<A,B,C,D> A tuple of A,B,C,D
static class	F.Tuple5<A,B,C,D,E> A tuple of A,B,C,D,E

Constructor Summary

Constructors

Constructor and Description
F()

Method Summary

Modifier and Type	Method and Description
static <A,B> F.Tuple<A,B>	Tuple(A a, B b) Constructs a tuple of A,B
static <A,B,C> F.Tuple3<A,B,C>	Tuple3(A a, B b, C c) Constructs a tuple of A,B,C
static <A,B,C,D> F.Tuple4<A,B,C,D>	Tuple4(A a, B b, C c, D d) Constructs a tuple of A,B,C,D
static <A,B,C,D,E> F.Tuple5<A,B,C,D,E>	Tuple5(A a, B b, C c, D d, E e) Constructs a tuple of A,B,C,D,E

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

F

public F()

Method Detail

Tuple

public static <A,B> F.Tuple<A,B> Tuple(A a,
                                       B b)

Constructs a tuple of A,B

Parameters:

a - The a value

b - The b value

Returns:

The tuple

Tuple3

public static <A,B,C> F.Tuple3<A,B,C> Tuple3(A a,
                                             B b,
                                             C c)

Constructs a tuple of A,B,C

Parameters:

a - The a value

b - The b value

c - The c value

Returns:

The tuple

Tuple4

public static <A,B,C,D> F.Tuple4<A,B,C,D> Tuple4(A a,
                                                 B b,
                                                 C c,
                                                 D d)

Constructs a tuple of A,B,C,D

Parameters:

a - The a value

b - The b value

c - The c value

d - The d value

Returns:

The tuple

Tuple5

public static <A,B,C,D,E> F.Tuple5<A,B,C,D,E> Tuple5(A a,
                                                     B b,
                                                     C c,
                                                     D d,
                                                     E e)

Constructs a tuple of A,B,C,D,E

Parameters:

a - The a value

b - The b value

c - The c value

d - The d value

e - The e value

Returns:

The tuple