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beelsebob/gist:6201559

Forked from seivan/gist:6201545
Last active December 20, 2015 21:59
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gistfile1.m
NSArray * playerIdentifiers = [matches SH_reduceValue:@[] withBlock:^id(NSArray *memo, GKTurnBasedMatch *obj) {
return [memo arrayByAddingObjectsFromArray:[obj SH_playerIdentifier]];
}];
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