Properties in Objective-C

@property writes the getter, setter and storage for you.

#import <Foundation/Foundation.h>

// @property writes the getter, setter and storage for you.
@interface Album : NSObject
@property (copy) NSString *title;
@property NSInteger year;
@end

@implementation Album
@end
int main(void) {
    @autoreleasepool {
        Album *album = [[Album alloc] init];
        // Dot syntax is sugar for the accessor messages.
        album.title = @"Head Hunters";
        album.year = 1973;
        NSLog(@"%@ (%ld)", album.title, (long)album.year);
    }
    return 0;
}

How it works

1. @property (copy) NSString *title synthesizes everything.
2. Dot syntax is sugar for the accessor messages.
3. (copy) snapshots the string instead of sharing it.

Keywords and builtins used here

• Album
• NSObject
• NSString
• copy
• int
• long
• return
• void

The run, in numbers

Lines

20

Characters to type

453

Tokens

83

Three-star pace

65 tpm

At the three-star pace of 65 tokens a minute, this run takes about 77 seconds.

Type this snippet

Step 2 of 3 in Classes, step 8 of 27 in Language basics.

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Properties in other languages

• Python