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g()('al')

g()('al') is a challenge whereby you need to write in as many languages as possible code which enables the code g()('al') to return the string "goal", the code g()()('al') to return the string "gooal", the code g()()()('al') return the string "goooal", etc.

g()('al') is the creation of acruikshank who originally posed it as a functional programming challenge. Extensive stubbornness and misinterpretation led to its current form.

Rules

  1. You are encouraged to break the rules, cleverly.
  2. When executed, the solution must print "goal" with sufficient o's to demonstrate the program's functionality.
  3. The code g()('al') must appear in the source.
  4. g()('al') must not be a string literal.
  5. 'al' must be a string, or your language's equivalent thereof. You may use your language's standard method of creating a string (e.x. C should use ", ruby may use either " or ').
  6. g()('al') must be a valid rvalue if applicable in your language.
  7. g()('al') may not print the string. If returning a string cannot be done in your language, you should submit rationale as to why this is impossible for a solution which prints a string to be accepted.
  8. You must be able to insert an arbitrary number of () calls without modification to your solution. Therefore solutions like this are incorrect.
  9. g('al') must return "gal".

If you see a complete solution that breaks any of these rules, file a bug!

If you have a solution that is close, but does not meet these rules, submit it anyway. A close and interesting solution is better than no solution.

Previous Solutions

The more exciting solutions are original, not applying techniques that have already been discovered. The following broadly applicable techniques have already been discovered:

Languages

Solved Incomplete
Befunge •
Brainfuck •
C •
C# •
C++ •
Clojure •
Coffeescript •
Common Lisp •
D •
Dart •
Emacs Lisp •
English •
Finite State Transducer •
Forth •
GNU Octave •
Go •
Groovy •
Haskell •
Haxe •
IO •
Java •
JavaScript •
Julia •
Lua •
Mathematica •
Nimrod •
OCaml •
Objective-J •
PHP •
Perl •
Perl 6 •
Python •
R •
Regexp •
Ruby •
Scala •
Scheme •
Sed •
Bourne Shell •
TCL •
XP •
ZSH •

Help out, add some more languages!

g()('lf')

Lets play golf! Submit a pull-request with a shorter solution for an already solved language and you can get the title of shortest, as shown in that language's README.

Note: I'm not done making READMEs for all the languages yet. Don't let that stop you!

Editor's Picks

These are some of the editor's favorite submissions: