Languages
Well known languages supporting lexically nested functions include:
- ALGOL-based languages such as ALGOL 68, Simula, Pascal, Modula-2, Modula-3, Oberon, Seed7 and Ada.
- Modern versions of Lisp (with lexical scope) such as Scheme, and Common Lisp.
- ECMAScript (JavaScript, and ActionScript).
- Full support in Scala
- Various degrees of support in scripting languages such as Ruby, Python, and Perl (starting with version 6).
- There is also a C-related language with nested functions, the D language.
- GCC also supports nested functions in C, as a language extension.
- Fortran, starting with Fortran-90, supports one level of nested (CONTAINed) subroutines and functions.
Read more about this topic: Nested Function
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