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objective-c:foundation.framework:nsdictionary.h:allkeys [2024/02/16 01:12] (current) |
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+ | ===== allKeys ===== | ||
+ | <code objc> | ||
+ | |||
+ | - (NSArray *)allKeys | ||
+ | |||
+ | </code> | ||
+ | |||
+ | Returns a new array containing the dictionary’s keys, or an empty array if the dictionary has no entries. | ||
+ | |||
+ | **Return Value** | ||
+ | - NSArray | ||
+ | |||
+ | ===== ObjC Sourcecode Example ===== | ||
+ | |||
+ | <code objc> | ||
+ | |||
+ | // ** Init dictionary with entries | ||
+ | NSDictionary *myDictionary = [[NSDictionary alloc]initWithObjectsAndKeys:@"value1", @"key1", @"value2", @"key2", nil]; | ||
+ | |||
+ | NSArray *keysArray = [myDictionary allKeys]; | ||
+ | |||
+ | // ** Output dictionary keys | ||
+ | NSLog(@"myDictionary all keys: %@", keysArray); | ||
+ | |||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== Output for this example code ==== | ||
+ | <code> | ||
+ | |||
+ | 2014-06-08 01:47:29.180 NSDictionary[3462:70b] myDictionary all keys: ( | ||
+ | key2, | ||
+ | key1 | ||
+ | ) | ||
+ | |||
+ | </code> |