Package com.intellij.util

Class FunctionUtil

java.lang.Object

com.intellij.util.FunctionUtil

public class FunctionUtil
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static java.lang.Runnable	composeRunnables(java.lang.Runnable r1, java.lang.Runnable r2) Returns a runnable which runs both supplied runnables.
static <A,B,C> NotNullFunction<A,C>	composition(NotNullFunction<? super B,? extends C> f, NotNullFunction<? super A,? extends B> g)
static <A,B> Function<A,B>	constant(B b)
static <T> Function<T,T>	id()
static <A,B> NullableFunction<A,B>	nullConstant()
static <T> Function<T,java.lang.String>	string()

Methods inherited from class java.lang.Object

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

Method Detail

id

public static <T> Function<T,T> id()

nullConstant

public static <A,B> NullableFunction<A,B> nullConstant()

string

public static <T> Function<T,java.lang.String> string()

constant

public static <A,B> Function<A,B> constant(B b)

composition

public static <A,B,C> NotNullFunction<A,C> composition(NotNullFunction<? super B,? extends C> f,
                                                       NotNullFunction<? super A,? extends B> g)

composeRunnables

public static java.lang.Runnable composeRunnables(java.lang.Runnable r1,
                                                  java.lang.Runnable r2)

Returns a runnable which runs both supplied runnables. If any of them throws, the second one is still executed. If both throw, the second exception is added to the first one as suppressed.

Parameters:

r1 - first runnable to run

r2 - second runnable to run

Returns:

composed runnable. If one of arguments is null, returns other argument.