Created
April 19, 2014 11:52
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NSArray+TransformerBlock
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// | |
// Copyright (c) 2014 Alek Åström | |
// | |
// Permission is hereby granted, free of charge, to any person obtaining a copy | |
// of this software and associated documentation files (the "Software"), to deal | |
// in the Software without restriction, including without limitation the rights | |
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
// copies of the Software, and to permit persons to whom the Software is | |
// furnished to do so, subject to the following conditions: | |
// | |
// The above copyright notice and this permission notice shall be included in | |
// all copies or substantial portions of the Software. | |
// | |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
// THE SOFTWARE. | |
// | |
@import Foundation; | |
@interface NSArray (TransformerBlock) | |
- (NSArray *)transformedArrayUsingBlock:(id (^)(id originalObject, NSUInteger index))transformerBlock; | |
@end | |
@implementation NSArray (TransformerBlock) | |
- (NSArray *)transformedArrayUsingBlock:(id (^)(id originalObject, NSUInteger index))transformerBlock { | |
NSMutableArray *array = [[NSMutableArray alloc] initWithCapacity:self.count]; | |
[self enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) { | |
[array addObject:transformerBlock(obj, idx)]; | |
}]; | |
return array; | |
} | |
@end |
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Use this for quickly transforming every object or index in an array, for example when converting
NSNumber
toNSIndexPath
instances.Example use: