Programming Tips - How do I split a string into characters so I can look at each one?

Date: 2011jul7 Language: perl Q. How do I split a string into characters so I can look at each one? A. Use split() with // as the pattern. For example:
$str = 'hello'; for $c (split(//,$str)) { print "c=$c\n"; }
However, usually in perl its better to use pattern matching to find something in a string.