session-ios/SignalServiceKit/src/Util/FunctionalUtil.h
2018-11-11 11:13:05 -06:00

21 lines
738 B
Objective-C

//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//
@interface NSArray (FunctionalUtil)
/// Returns true when any of the items in this array match the given predicate.
- (bool)any:(int (^)(id item))predicate;
/// Returns true when all of the items in this array match the given predicate.
- (bool)all:(int (^)(id item))predicate;
/// Returns an array of all the results of passing items from this array through the given projection function.
- (NSArray *)map:(id (^)(id item))projection;
/// Returns an array of all the results of passing items from this array through the given projection function.
- (NSArray *)filter:(int (^)(id item))predicate;
- (NSDictionary *)groupBy:(id (^)(id value))keySelector;
@end