Editing Apostrophe (section)

===Programming===
Some programming languages, like [[Pascal (programming language)|Pascal]], use the ASCII apostrophe to delimit [[string literal]]s. In many languages, including [[JavaScript]], [[ECMAScript]], and [[Python (programming language)|Python]], either the apostrophe or the double quote may be used, allowing string literals to contain the other character (but not to contain both without using an [[escape character]]), e.g. <code>foo='He said "Bar!"';</code>. Strings delimited with apostrophes are often called ''single quoted''. Some languages, such as [[Perl]], [[PHP]], and many shell languages, treat single quoted strings as "raw" strings, while double quoted strings have expressions (such as <code>"$variable"</code>) replaced with their values when interpreted.

The [[C (programming language)|C programming language]] (and many [[List of C-family programming languages|derived languages]] like [[C++]], [[Java (programming language)|Java]], [[C Sharp (programming language)|C#]], and [[Scala (programming language)|Scala]]) uses apostrophes to delimit a [[character literal]]. In these languages a character is a different object than a one-letter string.

In [[C++]], since [[C++14]], apostrophes can be included as optional digit separators in numeric literals.

In [[Visual Basic]] (and earlier Microsoft BASIC dialects such as QuickBASIC) an apostrophe is used to denote the start of a comment.{{NoteTag|As a comment character in MS BASIC, the apostrophe is in most cases an abbreviation of the REM statement, which can be appended to the end of almost any line with a colon (:). The cases where the apostrophe is not an abbreviation for <code>REM</code> would be those where the apostrophe is allowed but a REM statement is not. Note that there are also cases of the reverse constraint; for example, in QuickBASIC, a comment at the end of a DATA statement line cannot start with an apostrophe but must use <code>: REM</code>.}}

In the [[Lisp (programming language)|Lisp]] family of programming languages, an apostrophe is shorthand for the <code>quote</code> operator.

In [[Rust (programming language)|Rust]], in addition to being used to delimit a character literal, an apostrophe can start an explicit [[Object lifetime|lifetime]].