Help language development. Donate to The Perl Foundation
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.