47 lines
1.2 KiB
Objective-C
47 lines
1.2 KiB
Objective-C
//
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// Copyright 2021-2024 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only
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// Please see LICENSE in the repository root for full details.
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//
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#import "NSArray+Element.h"
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@implementation NSArray (Element)
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- (NSArray *)vc_map:(id (^)(id obj))transform
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{
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NSMutableArray *result = [NSMutableArray arrayWithCapacity:self.count];
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[self enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop)
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{
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[result addObject:transform(obj)];
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}];
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return result;
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}
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- (NSArray *)vc_compactMap:(id _Nullable (^)(id obj))transform
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{
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NSMutableArray *result = [NSMutableArray arrayWithCapacity:self.count];
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[self enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop)
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{
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id mappedObject = transform(obj);
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if (mappedObject)
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{
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[result addObject:mappedObject];
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}
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}];
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return result;
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}
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- (NSArray *)vc_flatMap:(NSArray* (^)(id obj))transform
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{
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NSMutableArray *result = [NSMutableArray arrayWithCapacity:self.count];
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[self enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop)
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{
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[result addObjectsFromArray:transform(obj)];
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}];
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return result;
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}
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@end
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