Question

I’m just trying to get my head around this type of syntax

I know that the

[instanceOfClass  Method];

eg. [myImage setImage:[NSImage imageNamed:@"picture.jpg"]];

performs a method on the instance of the class.

but how does this work..

Variable = [Class methodName];

eg. int Value = [sender intValue];

can someone explain this to me. I get that the first example performs a method on instance of class, class or variable..

but how does the latter part work?

Thank you very much.

Answer 1

The second example also performs a method on an instance of a class, but that method returns a value which is assigned to the value on the left side of the equation.

I’d recommend spending a little time reading the introduction provided by Apple. This specific question is discussed in this part of the document:

Like standard C functions, methods can return values. The following
example sets the variable isFilled to YES if myRectangle is drawn as a
solid rectangle, or NO if it’s drawn in outline form only.

BOOL isFilled;

isFilled = [myRectangle isFilled];