Editing Raku (programming language) (section)

===A type system===
In Raku, the [[Dynamic type|dynamic type system]] of Perl has been augmented by the addition of [[static type]]s.<ref name="syn2">{{cite web | url=https://design.raku.org/S02.html | title=Synopsis 2: Bits and Pieces | author=Wall, Larry | date=2009-05-20 }}</ref> For example:
<syntaxhighlight lang="raku">
my Int $i = 0;
my Rat $r = 3.142;
my Str $s = "Hello, world";
</syntaxhighlight>
However, static typing remains [[Type system#Combining static and dynamic type checking|optional]], so programmers can do most things without any explicit typing at all:
<syntaxhighlight lang="raku">
my $i = "25" + 10; # $i is 35
</syntaxhighlight>

Raku offers a [[gradual typing]] system, whereby the programmer may choose to use static typing, use dynamic typing, or mix the two.