Ellipsis (computer programming): Difference between revisions

Revision as of 22:44, 8 November 2012

Revision as of 20:01, 23 September 2013

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== Variable number of parameters ==

===C and C++===

{{unreferenced section|date=January 2011}}

In the [[C (programming language)|C programming language]], an ellipsis is used to represent a [[variadic function|variable number of parameters]] to a [[function (programming)|function]]. For example:

Line 46 ⟶ 48:

[[C++0x]] introduces templates with a [[variadic template|variable number of arguments]].

===PHP===

PHP 5.6 will<ref>https://wiki.php.net/rfc/variadics</ref> support use of ellipsis to define an explicitly [[variadic function]], where <code>...</code> before an argument in a function definition means that arguments from that point on will be collected into an array. For example:

<source lang="php">

function variadic_function($a, $b, ...$other) {

return $other;

}

var_dump(variadic_function(1, 2, 3, 4, 5);

</source>

Produces this output:

array(3) {

[0]=>

int(3)

[1]=>

int(4)

[2]=>

int(5)

}

== Multiple dimensions ==