org.stekikun.dolmen.common

Class Lists

java.lang.Object

org.stekikun.dolmen.common.Lists

public abstract class Lists
extends Object

This class contains various utility methods about Lists. I wished I had Guava available!

Author:

Stéphane Lescuyer

Method Summary

Modifier and Type	Method and Description
static <T> List<T>	empty()
static <T> List<T>	singleton(T elt)
static <T,U> List<U>	transform(List<? extends T> l, Function<? super T,? extends U> f) This is not a view, it returns a new list.

Methods inherited from class java.lang.Object

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

Method Detail

empty

public static <T> List<T> empty()

Returns:

the empty unmodifiable list

singleton

public static <T> List<T> singleton(T elt)

Parameters:

elt -

Returns:

the singleton list containing elt

transform

public static <T,U> List<U> transform(List<? extends T> l,
                                      Function<? super T,? extends U> f)

This is not a view, it returns a new list.

Parameters:

l -

f -

Returns:

the list l where all elements have been transformed by the function f