NSArray_RAdditions.m

/*
 *  R.app : a Cocoa front end to: "R A Computer Language for Statistical Data Analysis"
 *  
 *  R.app Copyright notes:
 *                     Copyright (C) 2004-11  The R Foundation
 *                     written by Stefano M. Iacus and Simon Urbanek
 *
 *                  
 *  R Copyright notes:
 *                     Copyright (C) 1995-1996   Robert Gentleman and Ross Ihaka
 *                     Copyright (C) 1998-2001   The R Development Core Team
 *                     Copyright (C) 2002-2004   The R Foundation
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  A copy of the GNU General Public License is available via WWW at
 *  http://www.gnu.org/copyleft/gpl.html.  You can also obtain it by
 *  writing to the Free Software Foundation, Inc., 59 Temple Place,
 *  Suite 330, Boston, MA  02111-1307  USA.
 *
 *  NSArray_RAdditions.h
 *
 *  Created by Hans-J. Bibiko on 01/07/2011.
 *
 */

#import "NSArray_RAdditions.h"


@implementation NSArray (NSArray_RAdditions)

- (NSArray *)subarrayWithIndexes:(NSIndexSet *)indexes
{
	NSMutableArray *subArray  = [NSMutableArray arrayWithCapacity:[indexes count]];
	NSUInteger count = [self count];

	NSUInteger index = [indexes firstIndex];
	while ( index != NSNotFound )
	{
		if ( index < count )
			[subArray addObject: [self objectAtIndex: index]];

		index = [indexes indexGreaterThanIndex: index];
	}

	return subArray;
}

@end