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//
// GTMNSDictionary+CaseInsensitive.h
//
// Copyright 2009 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>
#import "GTMDefines.h"
/// Utility for building case-insensitive NSDictionary objects.
@interface NSDictionary (GTMNSDictionaryCaseInsensitiveAdditions)
/// Initializes an NSDictionary with a case-insensitive comparison function
/// for NSString keys, while non-NSString keys are treated normally.
///
/// The case for NSString keys is preserved, though duplicate keys (when
/// compared in a case-insensitive fashion) have one of their values dropped
/// arbitrarily.
///
/// An example of use with HTTP headers in an NSHTTPURLResponse object:
///
/// NSDictionary *headers =
/// [NSDictionary gtm_dictionaryWithDictionaryCaseInsensitive:
/// [response allHeaderFields]];
/// NSString *contentType = [headers objectForKey:@"Content-Type"];
- (id)gtm_initWithDictionaryCaseInsensitive:(NSDictionary *)dictionary
NS_RETURNS_RETAINED NS_CONSUMES_SELF;
/// Returns a newly created and autoreleased NSDictionary object as above.
+ (id)gtm_dictionaryWithDictionaryCaseInsensitive:(NSDictionary *)dictionary;
@end
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