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mikeabdullah/PRHArrayByMap.h

Forked from boredzo/PRHArrayByMap.h
Created February 12, 2014 14:39
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PRHArrayByMap.h
extern NSArray *PRHArrayByMap(NSArray *inArray, id (^block)(id));
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PRHArrayByMap.m
NSArray *PRHArrayByMap(NSArray *inArray, id (^block)(id)) {
if (inArray == nil)
return nil;
NSCParameterAssert(block != nil);
NSMutableArray *outArray = [NSMutableArray arrayWithCapacity:inArray.count];
for (id obj in inArray) {
id result = block(obj);
NSCAssert(result != nil, @"%s: block(%@) returned nil—array follows\n%@", __func__, obj, inArray);
[outArray addObject:result];
}
return outArray;
}
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