> What does exactly does use strict do?
Here's a sample:
use strict;
use vars qw( $a $b $c # this is how you declare variables
$myvar ); # for use with "use strict"
$a = 1; #ok
$b = 2; #ok
$c = $a + b; #oops, forgot $ in front of "b"!
# Error: Bareword "b" not allowed while "strict subs" in use
$d = 2 * $c; #oops, $d not declared in "use vars"
# Error: Global symbol "$d" requires explicit package name
$myVar = $c; #oops, capitalization error
# Error: Global symbol "$myVar" requires explicity package name
So "use strict" functions as something of a safety net -- it makes you think
about what variables you're using, and helps catch misspellings and such.
