Question

Is it correct to write objective-c method like this

-methodA: (NSString *)str // without return type 
{
    return @"test";
}

Above method is working fine for me.
Is -methodA: (NSString *)str same as -(id)methodA: (NSString *)str?
I am using Mac 10.5 os x sdk.

Answer 1

To answer your question, from “The Objective-C 2.0 Programming Language”:

If a return or argument type isn’t explicitly declared, it’s assumed to be the default type for methods and messages — an id.

So - methodA:(NSString *)str is valid and the same as - (id)methodA:(NSString *)str.

However having said that it is certainly unusual coding practice and not to be encouraged – type the extra four characters!