Re: perlfaq4: How can I remove duplicate elements from a list or array?

In article <[email protected]>, Keith Ivey <[email protected]>
wrote:

> _brian_d_foy wrote:

> > The first time the loop
> > sees an element, that element has no key in C<%Seen>.

> Why the capital "S"?  None of the other variables are 
> capitalized, and it's not standard Perl practice.

Honestly, I use a capital S because I've only ever seen that
variable name in that context with a capital S.

However, you'll find in perlstyle:

   You may find it helpful to use letter case to indicate the 
   scope or nature of a variable. 

That's what happening here. In general, for variables that I
use only inside a contruct (like the foreach) but declare outside
the construct, I use an initial capital letter. Even though in
these examples it's a lexical variable, it has a scope beyond its
use, so I name it like I would a package variable.

-- 
brian d foy, [email protected]