Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw

Re: "$_" vs. $_

by Brovnik (Hermit)
on Apr 11, 2007 at 11:44 UTC ( #609349=note: print w/replies, xml ) Need Help??

in reply to "$_" vs. $_

I think this is what you wanted :
#!/usr/bin/perl use strict; use warnings; sub foo { my %params = @_; print "$_: $params{$_}\n", for keys %params; } my $word = shift @ARGV || "world"; foo ( hello => $word );
Do not use $_ as a temporary variable unless essential.

Declaring and naming the variable catches a lot of issues and solves (for example) the problem you came across as well as improving readability.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://609349]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others pondering the Monastery: (4)
As of 2016-10-22 10:04 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (294 votes). Check out past polls.