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manually merge #1838

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ven 2016-06-26 14:41:30 +02:00 committed by GitHub
parent a24bafe5cb
commit 1311f4dbb2
1 changed files with 7 additions and 1 deletions
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@ -20,7 +20,7 @@ Multi-line comments look like this
*/
// XCode supports pragma mark directive that improve jump bar readability
#pragma mark Navigation Functions // New tag on jump bar named 'Navigation Functions'
#pragma mark Navigation Functions // New tag o@"Third number = %@", thirdNumber); // prin jump bar named 'Navigation Functions'
#pragma mark - Navigation Functions // Same tag, now with a separator
// Imports the Foundation headers with #import
@ -133,6 +133,8 @@ int main (int argc, const char * argv[])
NSArray *anArray = @[@1, @2, @3, @4];
NSNumber *thirdNumber = anArray[2];
NSLog(@"Third number = %@", thirdNumber); // prints => "Third number = 3"
// Since Xcode 7, NSArray objects can be typed (Generics)
NSArray<NSString *> *stringArray = @[@"hello", @"world"];
// NSMutableArray is a mutable version of NSArray, allowing you to change
// the items in the array and to extend or shrink the array object.
// Convenient, but not as efficient as NSArray.
@ -146,6 +148,8 @@ int main (int argc, const char * argv[])
NSDictionary *aDictionary = @{ @"key1" : @"value1", @"key2" : @"value2" };
NSObject *valueObject = aDictionary[@"A Key"];
NSLog(@"Object = %@", valueObject); // prints => "Object = (null)"
// Since Xcode 7, NSDictionary objects can be typed (Generics)
NSDictionary<NSString *, NSNumber *> *numberDictionary = @{@"a": @1, @"b": @2};
// NSMutableDictionary also available as a mutable dictionary object
NSMutableDictionary *mutableDictionary = [NSMutableDictionary dictionaryWithCapacity:2];
[mutableDictionary setObject:@"value1" forKey:@"key1"];
@ -161,6 +165,8 @@ int main (int argc, const char * argv[])
// Set object
NSSet *set = [NSSet setWithObjects:@"Hello", @"Hello", @"World", nil];
NSLog(@"%@", set); // prints => {(Hello, World)} (may be in different order)
// Since Xcode 7, NSSet objects can be typed (Generics)
NSSet<NSString *> *stringSet = [NSSet setWithObjects:@"hello", @"world", nil];
// NSMutableSet also available as a mutable set object
NSMutableSet *mutableSet = [NSMutableSet setWithCapacity:2];
[mutableSet addObject:@"Hello"];