When you’re using code references heavily, you’re going to have a problem figuring out which one of them is having a problem. You define them in possibly several and far-flung parts of your program, but when it comes to using them, you don’t know which one you are using. You can’t really print its value like you would for a scalar, making it more difficult for you to debug things. You can dereference a scalar or an array to see what it is, but you can’t dereference a code reference without making it do something. Continue reading “Enchant closures for better debugging output”
Category: subroutines
Make your methods know as little as possible
How often have you wished that one of Perl’s modules did things slightly differently? That module mostly works for you except for some hard-coded decisions in string formats, pack specifications, or other minor point that you wish that you could configure. Continue reading “Make your methods know as little as possible”
Eliminate needless loops and branching
On Stackoverflow, there’s the question How can I convert a number to its multiple form in Perl?. The best answer for the particular problem is Number::Bytes::Human. Beyond, that, many of the answers take the usual if-elsif-else, such as the one suggested by Michael Cramer: Continue reading “Eliminate needless loops and branching”