Extract typedef

Language: Objective-C

Shortcut: Ctrl+Alt+K

The Extract Typedef refactoring changes the selected declaration of a type to a typedef definition. You can apply Extract Typedef when actual declaration is cumbersome, potentially confusing, or likely to vary from one implementation to another, or just to make code presentation more clear and readable.

Before	After
`@interface LoginModel : NSObject - (void)loginWithEmail:(NSString )email password:(NSString )password // void (^)(BOOL success) will be extracted to a typedef completion:(void (^)(BOOL success))completion; @end`	`// Extracted typedef typedef void (^LoginModelCompletion)(BOOL); @interface LoginModel : NSObject - (void)loginWithEmail:(NSString )email password:(NSString )password completion:(LoginModelCompletion)completion; @end`

Before

After

@interface LoginModel : NSObject

- (void)loginWithEmail:(NSString *)email
              password:(NSString *)password
            // void (^)(BOOL success) will be extracted to a typedef
            completion:(void (^)(BOOL success))completion;

@end

// Extracted typedef
typedef void (^LoginModelCompletion)(BOOL);

@interface LoginModel : NSObject

- (void)loginWithEmail:(NSString *)email
              password:(NSString *)password
            completion:(LoginModelCompletion)completion;

@end

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Extract typedef﻿

Extract a typedef definition﻿

Code example﻿

Extract typedef

Extract a typedef definition

Code example