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128 lines
3 KiB
Mathematica
128 lines
3 KiB
Mathematica
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/**
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NSArray-additions.m
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Various methods for NSArray
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Copyright (c) 2002 Free Software Foundation
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Written by: Stefan Urbanek <urbanek@host.sk>
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This file is part of the StepTalk project.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02111, USA.
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*/
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#import "NSArray+additions.h"
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#import "NSNumber+additions.h"
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#import "STBlock.h"
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#import <Foundation/NSEnumerator.h>
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@implementation NSArray (STCollecting)
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- do:(STBlock *)block
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{
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NSEnumerator *enumerator;
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id object;
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id retval = nil;
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enumerator = [self objectEnumerator];
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while( (object = [enumerator nextObject]) )
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{
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retval = [block valueWith:object];
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}
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return retval;
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}
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- select:(STBlock *)block
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{
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NSMutableArray *array;
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NSEnumerator *enumerator;
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id object;
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id value;
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array = [NSMutableArray array];
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enumerator = [self objectEnumerator];
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while( (object = [enumerator nextObject]) )
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{
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value = [block valueWith:object];
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if([(NSNumber *)value isTrue])
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{
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[array addObject:object];
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}
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}
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return [NSArray arrayWithArray:array];
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}
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- reject:(STBlock *)block
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{
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NSMutableArray *array;
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NSEnumerator *enumerator;
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id object;
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id value;
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array = [NSMutableArray array];
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enumerator = [self objectEnumerator];
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while( (object = [enumerator nextObject]) )
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{
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value = [block valueWith:object];
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if([(NSNumber *)value isFalse])
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{
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[array addObject:object];
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}
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}
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return [NSArray arrayWithArray:array];
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}
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- collect:(STBlock *)block
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{
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NSMutableArray *array;
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NSEnumerator *enumerator;
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id object;
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id value;
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array = [NSMutableArray array];
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enumerator = [self objectEnumerator];
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while( (object = [enumerator nextObject]) )
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{
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value = [block valueWith:object];
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[array addObject:value];
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}
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return [NSArray arrayWithArray:array];
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}
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- detect:(STBlock *)block
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{
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NSEnumerator *enumerator;
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id object;
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id retval = nil;
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enumerator = [self objectEnumerator];
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while( (object = [enumerator nextObject]) )
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{
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retval = [block valueWith:object];
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if([(NSNumber *)retval isTrue])
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{
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return object;
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}
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}
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return retval;
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}
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@end
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