Question

People keep giving me examples with carp instead of warn. Why? What makes carp better than warn?

Answer 1

carp gives you more info as to where the message comes from (context)

#!/usr/bin/perl  use Carp;  foo(); bar(); baz();  sub foo {   warn 'foo'; }  sub bar {   carp 'bar'; }  sub baz {   foo();   bar();  } 

produces

foo at ./foo.pl line 9. bar at ./foo.pl line 13         main::bar() called at ./foo.pl line 6 foo at ./foo.pl line 10. bar at ./foo.pl line 14         main::bar() called at ./foo.pl line 19         main::baz() called at ./foo.pl line 7 

kinda silly for this small program but comes in handy when you want to know who called the method that’s carp’ing.