44 lines
1.9 KiB
Objective-C
44 lines
1.9 KiB
Objective-C
//
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// Copyright 2021 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#import <Foundation/Foundation.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface NSArray (Element)
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/// Returns an array containing the results of mapping the given closure over the array's elements.
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/// @param transform A mapping closure. `transform` accepts an element of this array as its parameter
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/// and returns a transformed value of the same or of a different type.
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/// @return An array containing the transformed elements of this array.
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- (NSArray *)vc_map:(id (^)(id obj))transform;
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/// Returns an array containing the non-nil results of mapping the given closure over the array's elements.
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/// @param transform A mapping closure. `transform` accepts an element of this array as its parameter
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/// and returns a nullable transformed value of the same or of a different type.
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/// @return An array of the non-nil results of calling `transform` with each element of the array.
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- (NSArray *)vc_compactMap:(id _Nullable (^)(id obj))transform;
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/// Returns an array containing the concatenated results of mapping the given closure over the array's elements.
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/// @param transform A mapping closure. `transform` accepts an element of this array as its parameter
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/// and returns an array..
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/// @return The resulting flattened array.
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- (NSArray *)vc_flatMap:(NSArray* (^)(id obj))transform;
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@end
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NS_ASSUME_NONNULL_END
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