Editing Comma (section)

==Computing==
In the common [[character (computing)|character]] encoding systems [[Unicode]] and [[ASCII]], character 44 ([[hexadecimal|0x2C]]) corresponds to the comma symbol. The [[HTML]] [[numeric character reference]] is <code>&amp;#44;</code>.

In many computer languages commas are used as a field delimiter to separate arguments to a [[Subroutine|function]],<ref>{{cite web |url= https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Trailing_commas#Trailing_commas_in_functions |title=Trailing commas |access-date=31 May 2019 |first1=Felix |last1=Kling |first2=Florian |last2=Scholz |first3=Eric |last3=Shepherd |date=23 March 2019 |website=[[Mozilla|Mozilla Blog]] |archive-url= https://web.archive.org/web/20190405084616/https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Trailing_commas |archive-date=5 April 2019}}</ref> to separate elements in a [[Array data type|list]], and to perform data designation on multiple variables at once.

In the [[C (programming language)|C programming language]] the comma symbol is an [[Comma operator|operator]] which evaluates its first [[Parameter (computer programming)|argument]] (which may have side-effects) and then returns the value of its evaluated second argument. This is useful in ''for'' [[statement (programming)|statement]]s and [[Macro (computer science)|macros]].

In [[Smalltalk]] and [[APL (programming language)|APL]], the [[comma operator]] is used to [[Concatenation|concatenate]] collections, including strings. In APL, it is also used [[unary operation|monadically]] to rearrange the items of an array into a list.

In [[Prolog]], the comma is used to denote [[Logical Conjunction]] ("and").

The [[comma-separated values]] (CSV) format is very commonly used in exchanging text data between database and spreadsheet formats.