Re: [Dev-C++] #DEFINE versus cont variables in array inicializations

[<or...@vp...>]

Per Westermark wrote:
> I guess you don't think of gcc as a decent compiler then.

An interesting thing I found, when examining g++ deeply:
GCC is so smart, it even optimizes everything possible.
Suppose you have a function, that returns a class. The normal behaviour 
would be: call copy constructor, return copied object.
BUT if the variable was a local variable (created in the function) and 
you return that, then the "theoretical" behaviour would still be: copy 
object, return copied object, delete local variable, BUT gcc makes it 
very different: it simply return the local object without any copy, etc. 
It is not harmful, as the object would have been deleted anyway, so it 
is truly easier to simply return the local variable one-in-one. It is 
faster for sure.
It truly does this, as I stated - I have checked the pointer for the 
object, and it is the same in the function, and the after return.

Interesting...

--
Greetings,
   Balázs