Its a wrapper around class giving it a new interface.
- Converting interface of a class into another interface that clients expect without modifying their source code.
You have to change the library in the project. Moving from google maps to apple maps.
- Class you attend to use have very old interface. Example "dispatch_after" coded below.
@interface Timer : NSObject
+(void)dispatchAfter:(double)seconds block:(void (^)())block;
@end
@implementation Timer
+(void)dispatchAfter:(double)seconds block:(void (^)())block {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, seconds * NSEC_PER_SEC), dispatch_get_main_queue(), task);
}
@end[Timer dispatchAfter:10 block:^{
NSLog(@"Print");
}];
VS
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 10 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
NSLog(@"Print");
});https://sourcemaking.com/design_patterns/adapter
http://www.tutorialspoint.com/design_pattern/adapter_pattern.htm
http://www.oodesign.com/adapter-pattern.html
https://en.wikipedia.org/wiki/Adapter_pattern
[Timer new];