Objective-C stringWithFormat

April 8, 2009 § Leave a comment

You can create a NSString by creating a ‘static” instance by using @”…” construct.

NSString *variable = @”Sample”;

You can also create NSString using class method +stringWithFormat:. It functions similar to the printf function of the standard C library. It didn’t send to the standard output, instead it is put in a NSString.

int players = 50;
NSString *game;
game = [NSString stringWithFormat: @”This game accepts %d players”, players];

game will return a NSString containing “This game accepts 50 players”.

You can also use %@ specification to output a description of an object using NSObject -description for debugging.

NSObject *object = [myObject myMethod];
NSLog (@”The method returned: %@”, object);

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