package waymaker.gen; // Copyright © 2015 Michael Allan.  Licence MIT.                      -*-javaM-*-


/** More utilities for working with collections.
  */
public @ThreadSafe final class CollectionsX
{

    private CollectionsX() {}



 // /** Constructs an array of the collection’s elements.
 //   */
 // public static @SuppressWarnings("unchecked") <E> E[] toArray( final Collection<E> col )
 // {
 //     return col.toArray( (E[])ObjectX.EMPTY_OBJECT_ARRAY/*spare the garbage collection*/ );
 // }
 /// Fails with ClassCastException in toArray when col is empty.  (Somehow I mistakenly assumed an array
 /// could be treated as a type parameterized collection.)  Apparently there's no good alternative to the
 /// clumsy boilerplate of "col.toArray( new E[col.size()] )".  See also the comment ArraysX.newArray.


}