|XP is just a number|
Re: Perl keywords for declaring variables: my, our and local???by krusty (Hermit)
|on Mar 22, 2003 at 19:24 UTC||Need Help??|
our is a lexically scoped alias for a global variable. Will create the global if it didn't exist already.
See the following code:
By default any global variables you create automatically populate the "main" symbol table, %main::. With a package declaration you could change which symbol table you are populating when you declare unqualified variables.
But our is a lexical decalaration. In the case above the declaration was file scoped. That's why I still got something back when I gave it an unqualified print statement print "$a\n" after the package declaration.
Don't forget just because it's a lexically scoped variable, it's still an alias for a global variable. Hence when I reassigned $a = "foo" with the our declaration, I blew away the old value.
Any comments are welcome.