Editing Parameter (computer programming) (section)

=== Variable-length parameter lists ===
Some languages allow subroutines to be defined to accept a [[Variadic function|variable number of arguments]]. For such languages, the subroutines must iterate through the list of arguments.

PowerShell example:
<syntaxhighlight lang="powershell">
function marty {
    $args | foreach { "back to the year $_" }
}
</syntaxhighlight>
<syntaxhighlight lang="ps1con">
PS  > marty 1985
back to the year 1985

PS  > marty 2015 1985 1955
back to the year 2015
back to the year 1985
back to the year 1955
</syntaxhighlight>