[Tutor] Question about 'scopes'
ahimsa
ahimsa@onetel.net.uk
Tue Mar 25 09:33:13 2003
On Tuesday 25 Mar 2003 2:13 pm, alan.gauld@bt.com wrote:
> > Since this would deviate from 'normal', under what kinds of
> > conditions might one want to declare a variable as a global
> > variable rather than local?
>
> As few as possible. Global variables are generally held to
> be a bad thing in software engineering. There are very few(none?)
> cases when you *must* use global variables, but occasionally
> they help keep the code less cluttered. Use them sparingly
> is the golden rule...
I can appreciate that, and since the exception you noted has a viable=20
alternative that doesn't break the golden rule, then I see no need to=20
challenge that.=20
<snip>
> Once you start using classes and OOP you will find that these
> provide an even better way of avoiding globals almost entirely.
> But I suspect you're not quite ready for OOP just yet.
Damn! What gave me away??? :-D
Hopefully soon, though!
Thanks a lot
A
--=20
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