[smitty825]

I'm currently writing an Obj-C app. I've created a class that I use in several different places, and inside that class I have a method with no arguments. I realized that I need to expand that method to do something slightly different in a certain case.

In C++ I would create a default parameter so I could leave the rest of my code unchanged, but handle the special case with a variable.

(ie.

Code:
void myFunc(bool myVar=false);

void myFunc(bool myVar)
{
     if (myVar)
     {
          doSomething();
     }
}

However, I can't figure out if it is possible in Obj-C. The code below creates a compiler error. Any suggestions?

Code:
@interface myClass : NSObject
{
     id myVars;
}

- (id) myFunc:(BOOL)myVar=NO;

[Wevah]

Nope. But you can do this:

- (id)myFunc:(BOOL)myVar {
// do stuff
}

- (id)myFunc {
return [self myFunc:NO];
}

Edit: stupid graphical smileys.

[Chuckit]

The idea of default values doesn't really mesh with Objective-C. Instead of having a method name and argument list, Objective-C encourages a more self-documenting style where you name the arguments as part of the method, like [object movePhilange:foo toPosition:bar].

As Wevah said, though, you can create a method that calls another method with assumed arguments. Lots of Cocoa classes do this.

[smitty825]

Thanks for the responses. I now have another item on my Obj-C wish list I guess I'll just do a function that calls another function!