com.cleancode.util
Class CollectionsPlus

java.lang.Object
  com.cleancode.util.CollectionsPlus

public final class CollectionsPlus
extends Object

Convenience methods for collection handling.

Since:

CleanCode 0.9

Version:

$Revision: 9 $

Author:

Michael Sorens

Field Summary

static String

VERSION Current version of this class.

Method Summary

static <T> void	fill(Collection<T> c, T[] data) A convenience method to initialize a collection from an array.
static <T> void	fill(Map<T,T> map, T[][] data) A convenience method to initialize a map from a two-dimensional array.

Methods inherited from class java.lang.Object

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

Field Detail

VERSION

public static final String VERSION

Current version of this class.

Method Detail

fill

public static <T> void fill(Map<T,T> map,
                            T[][] data)

A convenience method to initialize a map from a two-dimensional array. Each element of the arbitrary length array is itself a two-element array, the first element being the key, and the second being the value for the map.

Type Parameters:

T - Generic-type.

Parameters:

map - the Map to fill

data - the two-dimensional array from which to fill the map

fill

public static <T> void fill(Collection<T> c,
                            T[] data)

A convenience method to initialize a collection from an array. This lets you say, e.g.

   ArrayList a = new ArrayList();
   CollectionsPlus.fill(a, new String[] { "", null, "xyz" });
 

instead of this standard (but little known) language construct:

   ArrayList a = new ArrayList() {
     { add(""); add(null); add("xyz"); }
   };
 

The choice is mostly a matter of style.

Type Parameters:

T - Generic-type.

Parameters:

c - Collection to fill

data - the array from which to fill the collection