Re^2: Warning for "unused sub declarations"?

Run this:

#use strict;
use warnings;

sub bar {
    print $foo;
}

my $foo = 1;
foo();
bar();

sub foo {
    print $foo;
}
[download]

Now uncomment out the use strict; and run it. FWIW, i do the same as you ... but yes, there are consequences.

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)

Comment on Re^2: Warning for "unused sub declarations"? Download Code

Replies are listed 'Best First'.
Re^3: Warning for "unused sub declarations"? by thor (Priest) on May 19, 2005 at 23:15 UTC
Maybe I'm a little slow, but are you and I talking about two different things? As far as I can tell, your `bar` routine depends on the global variable $foo which doesn't exist when bar is defined. What I was talking about was the need (or lack thereof) to put a superfluous declaration of all user-defined subs at the beginning of the file. thor `Feel the white light, the light within Be your own disciple, fan the sparks of will For all of us waiting, your kingdom will come`	[reply]
Re^4: Warning for "unused sub declarations"? by jeffa (Bishop) on May 20, 2005 at 12:54 UTC
Actually ... i was wrong. We are talking about 2 different things. I was thinking that by declaring subs "superfluously" you could guard against using global lexicals. I thought that was the reason for declaring subs before hand, other than pseudo-documentation, but turns out i was wrong. speaking of thor ... here's something amusing ... jeffa L-LL-L--L-LL-L--L-LL-L-- -R--R-RR-R--R-RR-R--R-RR B--B--B--B--B--B--B--B-- H---H---H---H---H---H--- (the triplet paradiddle with high-hat)	[reply] [d/l] [select]