Raku Land

Script::Hash

NAME

Script::Hash - A module to export a md5 hash of program name and arguments

SYNOPSIS

use Script::Hash; say "$script-hash" # output, example: 5067EEFF4999C7B5B4F593DD3521B9

DESCRIPTION

Script::Hash exports a single varibale, $script-hash, that can be used to access an md5 hash of the program name ($*PROGRAM-NAME) and the arguments (@*ARGS), stripped to 100 characters (to account for utf8 multi-codepoint chars, and the md5 implementation limit of 128 codepoints).

USE CASE

Why would you ever need such a simplistic and strange module? Script::Hash was designed for use in a module that requires a temporary directory that is keyed to the specific invocation of that module's binary. Basically, when one runs: raku script.raku option1 option2 it creates a directory and uses it to store temporary files, based on the $script-hash variable provided by this module. Then, whenever raku script.raku option1 option2 is run again (same arguments) the same temporary folder is used. When one calls raku script.raku option3 option4 option5 on the other hand, then the $script-hash variable differs, and a new temporary directory is created. Not sure it can be used in any more cases than this… If you have any, let me know!

AUTHOR

Mark Collins tera_1225@hotmail.com

COPYRIGHT AND LICENSE

Copyright 2020 Mark Collins

This work is free. You can redistribute it and/or modify it under the terms of the Do What The Fuck You Want To Public License, Version 2, as published by Sam Hocevar. See the COPYING file for more details.