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ProtocolKit

Protocol extension for Objective-C

Usage

Your protocol:

@protocol Forkable <NSObject>

@optional
- (void)fork;

@required
- (NSString *)github;

@end

Protocol extension, add default implementation, use @defs magic keyword

@defs(Forkable)

- (void)fork {
    NSLog(@"Forkable protocol extension: I'm forking (%@).", self.github);
}

- (NSString *)github {
    return @"This is a required method, concrete class must override me.";
}

@end

Your concrete class

@interface Forkingdog : NSObject <Forkable>
@end

@implementation Forkingdog

- (NSString *)github {
    return @"https://github.com/forkingdog";
}

@end

Run test

[[Forkingdog new] fork];

Result

[Console] Forkable protocol extension: I'm forking (https://github.com/forkingdog).

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Protocol extension for Objective-C

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