80c6a4e6be
NSArray supports lightweight generics in ObjC. Our extension on NSArray for map/filter/reduce does not. This change tweaks the interface to better support generics. Also, fixes some tests that weren't compiling.
29 lines
1.0 KiB
Objective-C
29 lines
1.0 KiB
Objective-C
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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NS_ASSUME_NONNULL_BEGIN
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@interface NSArray <ObjectType>(FunctionalUtil)
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/// Returns the first item in the array satisfying the predicate
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- (nullable ObjectType)firstSatisfying:(BOOL (^)(ObjectType item))predicate;
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/// Returns true when any of the items in this array match the given predicate.
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- (BOOL)anySatisfy:(BOOL (^)(ObjectType item))predicate;
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/// Returns true when all of the items in this array match the given predicate.
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- (BOOL)allSatisfy:(BOOL (^)(ObjectType item))predicate;
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/// Returns an array of all the results of passing items from this array through the given projection function.
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- (NSArray *)map:(id (^)(ObjectType item))projection;
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/// Returns an array of all the results of passing items from this array through the given projection function.
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- (NSArray<ObjectType> *)filter:(BOOL (^)(ObjectType item))predicate;
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- (NSDictionary<id, NSArray<ObjectType> *> *)groupBy:(id (^)(id value))keySelector;
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@end
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NS_ASSUME_NONNULL_END
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