ALFL

Aliases: A Lazy Functional Language

Provenance: commit 099d34871e · authored 2026-03-05T19:18:28+01:00 · agent claude-code · model claude-sonnet-4-6

1 source · not in taxonomy (canonical name didn't match any upstream)

Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

-- ALFL: A Lazy Functional Language (Hudak, Yale 1984)
-- Example: Higher-order list functions

map f [] = []
map f (x:xs) = f x : map f xs

filter p [] = []
filter p (x:xs) = if p x then x : filter p xs
                         else filter p xs

foldr f z [] = z
foldr f z (x:xs) = f x (foldr f z xs)

sum xs = foldr (+) 0 xs

squares = map (\x -> x * x) [1..10]

main = sum squares