Re: [Beaver-devel] str_replace_tokens

[Leslie Polzer]

On Fri, 06 Jun 2003 17:11:36 -0400
Michael Terry <address@hidden> wrote:

> Leslie Polzer wrote:
> >>The reason is so that I can write
> >>str_replace_tokens (&str, 'l', "hi");
> >>
> >>instead of
> >>str = str_replace_tokens (str, 'l', "hi");
> > 
> > Huh? But it'd be possible alright to write
> > 
> >     str_replace_tokens (str, 'l', "hi");
> > 
> > too, wouldn't it?
> > Of course only if the ** was a *.
> 
> No, you couldn't.  C passes things by value, so if you did it with one 
> *, you would merely get a copy of the calling function's pointer.  You 
> wouldn't be able to change the actual calling function's pointer.
> 
> Think of it like this: if you wanted to actually change the value of an 
> int, you would use int *.  Since we want to change the value of a gchar 
> *, we use gchar **.
My bad, you're right of course. Thanks!
By the way, I have replace str_replace_tokens by a version that can
handle more than one character in obj.

Leslie


-- 
Current Main System: LFS Linux dreadnought 2.4.20 #18 Thu May 15 19:11:10 CEST 
2003 i686
Random Religious Statement: I don't like Emacs - it's bloated and expects 
disturbing control sequences.