Raku port of Perl's chr() / ord() built-ins
use P5chr; # exports chr() and ord()
my $a = 65;
say chr $a;
$_ = 65;
say chr(); # bare chr may be compilation error to prevent P5isms in Raku
my $a = "A";
say ord $a;
$_ = "A";
say ord(); # bare ord may be compilation error to prevent P5isms in Raku
This module tries to mimic the behaviour of Perl's
ord built-ins as closely as possible in the Raku Programmming Language.
ORIGINAL PERL 5 DOCUMENTATION
chr Returns the character represented by that NUMBER in the character
set. For example, "chr(65)" is "A" in either ASCII or Unicode, and
chr(0x263a) is a Unicode smiley face.
Negative values give the Unicode replacement character
(chr(0xfffd)), except under the bytes pragma, where the low eight
bits of the value (truncated to an integer) are used.
If NUMBER is omitted, uses $_.
For the reverse, use "ord".
Note that characters from 128 to 255 (inclusive) are by default
internally not encoded as UTF-8 for backward compatibility
ord Returns the numeric value of the first character of EXPR. If EXPR
is an empty string, returns 0. If EXPR is omitted, uses $_. (Note
character, not byte.)
For the reverse, see "chr".
In future language versions of Raku, it will become impossible to access the
$_ variable of the caller's scope, because it will not have been marked as a dynamic variable. So please consider changing:
or, using the subroutine as a method syntax, with the prefix
. shortcut to use that scope's
$_ as the invocant:
Elizabeth Mattijsen firstname.lastname@example.org
Source can be located at: https://github.com/lizmat/P5chr . Comments and Pull Requests are welcome.
COPYRIGHT AND LICENSE
Copyright 2018, 2019, 2020, 2021 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.