Dynamic binding -- Qt's Signals and Slots vs Objective-C

[Bill Baxter]

Hey there,

Fredrik Olsson wrote:
> Bill Baxter skrev:
>>  > [obj1 sendAction:[obj1 action] to:[obj1 target]];
>> it looks like there are two methods, 'sendAction' and 'to'.
>> And I take it [obj1 action] is a named attribute lookup, similar to a 
>> QProperty?
>>
> Hmm... now this is strange, and it took a while for me to grasp it as 
> well :). Lets take this one:
> [obj1 sendAction:[obj1 action] to:[obj1 target]]
> It is actually three method calls, two of them nested.
> [obj1 action] is calling obj1's method action, and that method returns a 
> selector, a selector is a method.
> [obj1 target] is also a method call, but returning an object instance.

That's very interesting.  Can you also reverse the order of arguments in 
the call, like to:sendAction:?  Or is that a different method?
    [obj1 to:[obj1 target] sendAction:[obj1 action]]

--bb