Editing Concatenation (section)

==Syntax==
In many [[programming language]]s, string concatenation is a [[binary operation|binary]] [[infix operator]], and in some it is written without an operator. This is implemented in different ways:

* [[operator overloading|Overloading]] the plus sign <code>+</code> Example from C#: <code>"Hello, " + "World"</code> has the value <code>"Hello, World"</code>.
* Dedicated operator, such as <code>.</code> in PHP, <code>&amp;</code> in Visual Basic<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/te2585xw.aspx |title=Concatenation Operators in Visual Basic |work=.NET Visual Basic guide Language features: Operators and expressions |date=2015 |publisher=Microsoft}}</ref>, and <code>||</code> in SQL.<ref>{{cite web |title=SQL {{!}} Concatenation Operator |url=https://www.geeksforgeeks.org/sql-concatenation-operator/ |website=geeksforgeeks.org |date=12 January 2018 |access-date=11 August 2023}}</ref><ref>{{cite web |url=http://docs.oracle.com/cd/B19306_01/server.102/b14200/operators003.htm |title=Concatenation Operator |work=Oracle Database Online Documentation, 10g Release 2 (10.2) / Administration: Database SQL Reference |publisher=Oracle}}</ref> This has the advantage over reusing <code>+</code> that it allows implicit [[type conversion]] to string.
* [[string literal concatenation]], which means that adjacent strings are concatenated without any operator. Example from C: <code>"Hello, " "World"</code> has the value <code>"Hello, World"</code>.
In many scientific publications or standards the concatenation operator notation used is <code>||</code>.<ref>{{Cite report |url=https://datatracker.ietf.org/doc/html/rfc8017#section-2 |title=PKCS #1: RSA Cryptography Specifications Version 2.2 |last=Moriarty |first=Kathleen |last2=Kaliski |first2=Burt |last3=Jonsson |first3=Jakob |last4=Rusch |first4=Aneas |date=November 2016|section=2. Notation |publisher=Internet Engineering Task Force |issue=RFC 8017}}</ref>