Pail

Pail is an esoteric programming language based on pairs; just as Lisp stands for LISt Processing, Pail stands for PAIr Language.

This is the reference distribution for Pail.

The Pail programming language is documented in the literate Haskell source code of its reference interpreter, Pail.lhs, which can be found in the src/Language subdirectory:

• src/Language/Pail.lhs

The literate Haskell was written as if it were Markdown, so you might (or might not) have luck looking at it as such in a browsing interface:

• Language.Pail

Some tests, in Falderal format, which might clarify the intended behaviour, can be found in Pail.md in the tests subdirectory:

• tests/Pail.md

These files are distributed under a 3-clause BSD license. See the file LICENSE for the license text.

There is also a demonstration of running the Pail interpreter in a web browser, by compiling the reference implementation to Javascript with the Haste compiler. You can try this locally by building demo/pail.js and opening demo/pail.html in a web browser.

More information

For more information on the language, see the Pail entry at Cat's Eye Technologies.