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P5reset - Implement Perl's reset() built-in
use P5reset; reset("a"); # reset all "our" variables starting with "a" reset("a-z"); # reset all "our" variables starting with lowercase letter reset; # does not reset any variables
This module tries to mimic the behaviour of the
reset function of Perl as closely as possible.
reset EXPR reset Generally used in a "continue" block at the end of a loop to clear variables and reset "??" searches so that they work again. The expression is interpreted as a list of single characters (hyphens allowed for ranges). All variables and arrays beginning with one of those letters are reset to their pristine state. If the expression is omitted, one-match searches ("?pattern?") are reset to match again. Only resets variables or searches in the current package. Always returns 1. Examples: reset 'X'; # reset all X variables reset 'a-z'; # reset lower case variables reset; # just reset ?one-time? searches Resetting "A-Z" is not recommended because you'll wipe out your @ARGV and @INC arrays and your %ENV hash. Resets only package variables; lexical variables are unaffected, but they clean themselves up on scope exit anyway, so you'll probably want to use them instead. See "my".
Since Raku doesn't have the concept of
?one time searches?, the no-argument form of
reset will not reset any variables at all.
Elizabeth Mattijsen [email protected]
Source can be located at: https://github.com/lizmat/P5reset . Comments and Pull Requests are welcome.
Copyright 2018-2019 Elizabeth Mattijsen
Re-imagined from Perl as part of the CPAN Butterfly Plan.
This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.