SBDavid
May 17th, 2010
May 17th, 2010
Safety net for Perl
Safety net for Perl
Perl by default is very forgiving. In order to make it more robust it is recommended to start every program with the following lines:
#!/usr/bin/perl
use strict;
use warnings;
use strict;
use warnings;
The two additional lines request from perl to catch various common problems in your code. They check different things so you need both. A potential problem caught by use strict; will cause your code to stop immediately when it is encountered, while use warnings; will merely give a warning (like the command-line switch -w) and let your code run.
To read more about them check their respective manual pages at strict and warnings.
