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nsarray additions
@implementation NSArray (Mehdditions)
- (NSArray*) filter:(BOOL (^)(id)) block {
NSMutableArray* result = [NSMutableArray new];
for (id item in self)
if (block(item))
[result addObject:item];
return result;
}
- (NSArray*) map:(id (^)(id)) block {
NSMutableArray* result = [NSMutableArray new];
for (id item in self)
[result addObject:block(item)];
return result;
}
- (id) reduce:(id) value block:(id (^)(id, id)) aBlock {
id result = value;
for (id item in self)
result = aBlock(result, item);
return result;
}
@end
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