Editing Lazy evaluation (section)

==Implementation==
Some programming languages delay evaluation of expressions by default, and some others provide [[subroutine|functions]] or special [[syntax of programming languages|syntax]] to delay evaluation. In [[KRC (programming language)|KRC]], [[Miranda (programming language)|Miranda]] and [[Haskell]], evaluation of function arguments is delayed by default. In many other languages, evaluation can be delayed by explicitly suspending the computation using special syntax (as with [[Scheme (programming language)|Scheme's]] "<code>delay</code>" and "<code>force</code>" and [[OCaml]]'s "<code>lazy</code>" and "<code>Lazy.force</code>") or, more generally, by wrapping the expression in a [[thunk (delayed computation)|thunk]]. The object representing such an explicitly delayed evaluation is called a ''[[lazy future]].'' [[Raku (programming language)|Raku]] uses lazy evaluation of lists, so one can assign infinite lists to variables and use them as arguments to functions, but unlike Haskell and Miranda, Raku does not use lazy evaluation of arithmetic operators and functions by default.<ref name="Wadler2006"/>