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 interface	F.Function4<A,B,C,D,R> A Function with 4 arguments.
static class	F.LazySupplier<T>
static class	F.PromiseTimeoutException Exception thrown when an operation times out.
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

Type Parameters:

A - a's type

B - b's type

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

Type Parameters:

A - a's type

B - b's type

C - c's type

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

Type Parameters:

A - a's type

B - b's type

C - c's type

D - d's type

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

Type Parameters:

A - a's type

B - b's type

C - c's type

D - d's type

E - e's type

Parameters:

a - The a value

b - The b value

c - The c value

d - The d value

e - The e value

Returns:

The tuple