Built-in functions #12

✓

Raku++ 5.0.0-g312cde8e prints exactly what Rakudo 2026.08 prints

This is valid Raku: Rakudo 2026.08, the reference compiler, runs it without complaint, and the two outputs match character for character.

The program

The first lines compute $value. The last four lines are the same in every program: they print what kind of thing $value is, how it looks as code, as a string, and as true or false.

my $source = "Raku 🦋";
my $value = ($source.chars, $source.codes, $source.ords.Array, $source.flip);

sub safe-str($v) { my $s = try $v.Str; $s.defined ?? $s !! '<undefined>' }
say "TYPE\t" ~ $value.^name;
say "RAKU\t" ~ $value.raku;
say "STR\t" ~ safe-str($value);
say "BOOL\t" ~ $value.Bool;

Run executes the program in your browser, with the Raku++ build this site ships. Edit it and try variations.

What each compiler printed

	Rakudo 2026.08	Raku++ 5.0.0-g312cde8e
Type .^name	`List`	`List`
Code form .raku	`$(6, 6, [82, 97, 107, 117, 32, 129419], "🦋 ukaR")`	`$(6, 6, [82, 97, 107, 117, 32, 129419], "🦋 ukaR")`
String .Str	`6 6 82 97 107 117 32 129419 🦋 ukaR`	`6 6 82 97 107 117 32 129419 🦋 ukaR`
True or false .Bool	`True`	`True`

builtins-v1 · seed 51 · recorded 2026-09-29 with Rakudo 2026.08 and Raku++ 5.0.0-g312cde8e · Source on GitHub ↗