Editing Raku (programming language) (section)

===Lazy evaluation===
Raku uses the technique of [[lazy evaluation]] of lists that has been a feature of some [[functional programming]] languages such as [[Haskell (programming language)|Haskell]]:<ref name="syn9">{{cite web | url=https://design.raku.org/S09.html | title=Synopsis 9: Data Structures | author=Wall, Larry | date=2004-09-13 }}</ref>
<syntaxhighlight lang="raku">
@integers = 0..Inf; # integers from 0 to infinity
</syntaxhighlight>
The code above will not crash by attempting to assign a list of infinite size to the array <code>@integers</code>, nor will it hang indefinitely in attempting to expand the list if a limited number of slots are searched.

This simplifies many common tasks in Raku including input/output operations, list transformations, and parameter passing.