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Diffstat (limited to 'Foundation/GTMNSArray+Merge.h')
| -rw-r--r-- | Foundation/GTMNSArray+Merge.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Foundation/GTMNSArray+Merge.h b/Foundation/GTMNSArray+Merge.h new file mode 100644 index 0000000..8140f80 --- /dev/null +++ b/Foundation/GTMNSArray+Merge.h @@ -0,0 +1,47 @@ +// +// GTMNSArray+Merge.h +// +// Copyright 2008 Google Inc. +// +// Licensed under the Apache License, Version 2.0 (the "License"); you may not +// use this file except in compliance with the License. You may obtain a copy +// of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +// License for the specific language governing permissions and limitations under +// the License. +// + +#import <Foundation/Foundation.h> + +// Extension to NSArray to allow merging of arrays. +// +@interface NSArray (GTMNSArrayMergingAdditions) + +// Merge our array with |newArray| by sorting each array then merging the +// two arrays. If |merger| is provided then call that method on any old +// items that compare as equal to a new item, passing the new item as +// the only argument. If |merger| is not provided, then insert new items +// in front of matching old items. If neither array has any items then +// nil is returned. +// +// The signature of the |merger| is: +// - (id)merge:(id)newItem; +// +// Returns a new, sorted array. +- (NSArray *)gtm_mergeArray:(NSArray *)newArray + mergeSelector:(SEL)merger; + +// Same as above, only |comparer| is used to sort/compare the objects, just like +// -[NSArray sortedArrayUsingSelector]. If |comparer| is nil, nil is returned. +- (NSArray *)gtm_mergeArray:(NSArray *)newArray + compareSelector:(SEL)comparer + mergeSelector:(SEL)merger; + +@end + + |