String (computer science): Difference between revisions

Revision as of 06:45, 21 October 2023

Revision as of 17:13, 27 October 2023

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Depending on the programming language and precise data type used, a [[variable (programming)|variable]] declared to be a string may either cause storage in memory to be statically allocated for a predetermined maximum length or employ [[dynamic allocation]] to allow it to hold a variable number of elements.

When a string appears literally in [[source code]], it is known as a [[string literal]] or an anonymous string.<ref>{{cite web|url=http://www.acsu.buffalo.edu/~fineberg/mfc158/week10lecture.htm|title=Introduction To Java -– MFC 158 G|quote=String literals (or constants) are called ‘anonymous strings’|url-status=live|archive-url=https://web.archive.org/web/20160303233357/http://www.acsu.buffalo.edu/~fineberg/mfc158/week10lecture.htm|archive-date=2016-03-03}}</ref>

In [[formal language]]s, which are used in [[mathematical logic]] and [[theoretical computer science]], a string is a finite sequence of [[symbol (formal)|symbol]]s that are chosen from a [[set (mathematics)|set]] called an [[alphabet (computer science)|alphabet]].