With the onslaught of golf meditations recently (of which I shall soon be posting one -- fear not!), I'm posting a set of reminders that you may be wont to take heed of, ere you post again!
- if you use a regex, be sure . can match a newline, by using the /s modifier to the regex
- pop is two characters less than shift
- assign to @_ and $_ if you can -- it saves a my declaration (if you're stingy), and allows operations like regexes and pop to work without an argument
- screw $1 and the like, and use $& and its friends instead
- map() is probably a useful tool to master for golf
- leave out semicolons wherever possible
- don't explicitly return unless you must
- doing .$/ is shorter than ."\n" -- same for .$" vs. ." "
- {...;redo} is shorter than while(1){...}
- {...;$x&&redo} is shorter than while($x){...}
- use || and &&
japhy --
Perl and Regex Hacker
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