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Reserved Keywords
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- Snippet from Wikipedia: Reserved word
In a computer language, a reserved word (also known as a reserved identifier) is a word that cannot be used as an identifier, such as the name of a variable, function, or label – it is "reserved from use". This is a syntactic definition, and a reserved word may have no user-defined meaning.
A closely related and often conflated notion is a keyword, which is a word with special meaning in a particular context. This is a semantic definition. By contrast, names in a standard library but not built into a language are not considered reserved words or keywords. The terms "reserved word" and "keyword" are often used interchangeably – one may say that a reserved word is "reserved for use as a keyword" – and formal use varies from language to language. For this article, we distinguish as above.
In general reserved words and keywords need not coincide, but in most modern languages keywords are a subset of reserved words, as this makes parsing easier, since keywords cannot be confused with identifiers. In some languages, like C or Python, reserved words and keywords coincide, while in other languages, like Java, all keywords are reserved words, but some reserved words are not keywords, being reserved for future use. In yet other languages, such as the older languages ALGOL, FORTRAN, and PL/I, there are keywords but no reserved words, with keywords being distinguished from identifiers by other means.
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Reserved Keywords: (Also called: Language Keywords, Reserved Keyword, Reserved Word, Keywords, Reserved Identifier, Reserved Identifiers) Ada Keywords, ALGOL 68 Keywords, Angular Keywords, Android Keywords, Apple iOS Keywords, ARM Assembly Keywords, Assembly Keywords, AWK Keywords, Bash Keywords, BASIC Keywords, C Keywords (https://en.cppreference.com/w/c/keyword), C# Keywords, .NET Keywords, C++ Keywords (https://en.cppreference.com/w/cpp/keyword), Clojure Keywords, COBOL Keywords, Dart Keywords, Delphi Keywords, Django Keywords, Elixir Keywords, Erlang Keywords, F Sharp Keywords, Fortran Keywords, Flask Keywords, Golang Keywords, Groovy Keywords, Haskell Keywords, Jakarta EE Keywords, Java Keywords, JavaScript Keywords, JCL Keywords, Julia Keywords, Kotlin Keywords, Lisp Keywords (Common Lisp Keywords), Lua Keywords, MATHLAB Keywords, Objective-C Keywords, OCaml Keywords, Pascal Keywords, Perl Keywords, PHP Keywords, PL/I Keywords, PowerShell Keywords, Python Keywords, Quarkus Keywords, R Language Keywords, React.js Keywords, Rexx Keywords, RPG Keywords, Ruby Keywords, Rust Keywords, Scala Keywords, Spring Keywords, SQL Keywords, Swift Keywords, Transact-SQL Keywords, TypeScript Keywords, Visual Basic Keywords, Vue.js Keywords, X86 Assembly Keywords, X86-64 Assembly Keywords. (navbar_reserved_keywords - see also navbar_cpp_keywords)
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