Editing Named parameter (section)

== Use in programming languages ==
Named parameters are supported explicitly in many languages. A non-exhaustive selection of examples includes [[Ada (programming language)|Ada]],<ref>{{cite book|author=|year=1983|title=Reference Manual for the Ada Programming Language|publisher=United States Department of Defense|isbn=}}</ref> [[C Sharp 4.0|C# 4.0+]],<ref>{{Cite web|last=BillWagner|title=Named and Optional Arguments - C# Programming Guide|url=https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/named-and-optional-arguments|access-date=2021-06-16|website=Microsoft Learn|language=en-us}}</ref> [[Ceylon (programming language)|Ceylon]]{{Citation needed|date=July 2021}}, [[ColdFusion Markup Language]] (CFML){{Citation needed|date=July 2021}}, [[Common Lisp]],<ref>{{Cite web|title=Functions|url=https://lispcookbook.github.io/cl-cookbook/functions.html|access-date=2021-10-28|website=The Common Lisp Cookbook }}</ref> [[Fortran]]{{Citation needed|date=July 2021}}, [[IDL (programming language)|IDL]]{{Citation needed|date=July 2021}}, [[Kotlin (programming language)|Kotlin]],<ref>{{Cite web|title=Functions {{!}} Kotlin|url=https://www.jetbrains.com/idea/functions.html|access-date=2021-06-16|website=Kotlin Help|language=en-US}}{{dead link|date=December 2023}}</ref> [[Mathematica]]{{Citation needed|date=July 2021}}, [[PL/SQL]]{{Citation needed|date=July 2021}}, [[PowerShell]]{{Citation needed|date=July 2021}}, [[Python (programming language)|Python]],<ref>{{Cite web|title=8. Compound statements - 8.7. Function definitions |url=https://docs.python.org/3/reference/compound_stmts.html#function-definitions|access-date=2021-10-28|website=Python documentation }}</ref> [[R (programming language)|R]],<ref>{{Cite web|title=10.3 Named arguments and defaults|url=https://cran.r-project.org/doc/manuals/r-release/R-intro.html#Named-arguments-and-defaults |publisher=The Comprehensive R Archive Network |access-date=2021-10-28|website=An Introduction to R}}</ref> [[PHP]],<ref>{{Cite web|title=PHP: Function arguments - Manual - Named Arguments |url=https://www.php.net/manual/en/functions.arguments.php#functions.named-arguments|access-date=2021-06-16|website=PHP }}</ref> [[Ruby (programming language)|Ruby]],<ref>{{Cite web|title=Ruby 2 Keyword Arguments|url=https://thoughtbot.com/blog/ruby-2-keyword-arguments |first1=Ian C. |last1=Anderson |access-date=2021-10-28|website=thoughtbot |date=21 July 2014}}</ref> [[Scala (programming language)|Scala]],<ref>{{Cite web|title=Named Arguments|url=https://docs.scala-lang.org/tour/named-arguments.html|access-date=2021-06-16|website=Scala Documentation}}</ref> [[Smalltalk]]{{Citation needed|date=July 2021}}, [[Swift (programming language)|Swift]]<ref>{{Cite web|url=https://docs.swift.org/swift-book/LanguageGuide/Functions.html#ID166|title=Functions |website=The Swift Programming Language (Swift 5.1) |access-date=2020-01-27}}</ref> and [[Visual Basic]].<ref>{{Cite web|last=KathleenDollard|title=Passing Arguments by Position and by Name - Visual Basic|url=https://docs.microsoft.com/en-us/dotnet/visual-basic/programming-guide/language-features/procedures/passing-arguments-by-position-and-by-name|access-date=2021-06-16|website=Microsoft Learn|language=en-us}}</ref> [[Objective-C]] does not have named parameters (even though parts of the method name may look like named parameters).<ref>''[https://developer.apple.com/library/ios/documentation/cocoa/conceptual/ProgrammingWithObjectiveC/DefiningClasses/DefiningClasses.html#//apple_ref/doc/uid/TP40011210-CH3-SW5|iOS Developer Library - The Implementation of a Class Provides Its Internal Behavior]''</ref>
<br>In [[C++]], you can achieve named parameters by using designated initializers since [[C++20]],<ref>{{Cite web|url=https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0329r4.pdf|title=Designated Initialization Wording}}</ref> like so:
<syntaxhighlight lang="cpp">
struct A {int a{}, int b{} }; 

void
foo(A bar)
{
   std::cout << bar.a << bar.b;
}
foo({ .a = 1, .b = 3 });
</syntaxhighlight>