Case Insensitive Identifiers - language feature

Example from 1 languages: Pascal

s := (A + a + A);

Example from 1 languages: Nim

# Though they may be phased out:
# https://github.com/nim-lang/RFCs/issues/456

Example from 1 languages: Fortran

x = 2.0
y = x + X

Example from 1 languages: Ada

with Gnat.Io; use Gnat.Io;
procedure Numbers is
   Score: Integer;
   F: Float := 1.0;
begin
   Score := 3 + 2#1011#;
   Put(score);
   New_Line;
   Score := Score + 1_000_000;
   Put(Score);
   New_Line;
end Numbers;

Example from 1 languages: VHDL

signals some_signal : integer ;
signal some_other_signal : integer ;
signal result : integer ;
ReSULT <= SOME_SIGNAL + sOME_oTHer_SIGNal ; -- Although totally unrecommended - this is perfectly legal

Example from 1 languages: Speedie

if "abc".LeNgTh == 3
  "cool length"

Languages with Case Insensitive Identifiers include HTML, CSS, SQL, SAS, COBOL, Visual Basic, Pascal, Nim, Fortran, Ada, PostgreSQL, MySQL, SPSS, VHDL, Forth, Visual Basic .NET, Delphi, AutoHotkey, BASIC, Eiffel, Batchfile, Gforth, SAKO, Speedie

Languages without Case Insensitive Identifiers include JavaScript, C, Python, Java, Perl, Ruby, PHP, Go, XML, JSON, TypeScript, R, Rust, Swift, Scala, Lua, Kotlin, Haskell, Clojure, CoffeeScript, Elixir, Lisp, Erlang, Prolog, Objective-C, Julia, Dart, CUDA, Racket, Reason, GraphQL, D, Elm, Scheme, Chapel, OCaml, F#, Smalltalk, Tcl, Node.js, LaTeX, C3, SQLite, Arduino Programming Language, Maple, ActionScript, XQuery, Wa-lang, Sage, Modula-2, Lil, C2, progsbase, Modula-3, Veryl, Bel, SAT

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Read more about Case Insensitive Identifiers on the web: 1.

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