Not sure whether these are supposed to exit with status 0 or if it doesn’t matter, so here’s one of each.
haskell_loop.hs is an infinite loop (well, in GHC, it throws a NonTermination exception instead).
haskell_term.hs is AFAICT the smallest program that terminates successfully; it even has output! (But only because print 0 is slightly shorter than return().)
Actually, the smallest syntactically valid file is empty. But in an actual program the Main module (which a file with no module header is) has to at least contain the main function. And similarly, main=0 would be shorter but main is expected to have the type IO ().
mathiasbynens
commented
12 years ago
Not sure whether these are supposed to exit with status
0or if it doesn’t matter, so here’s one of each.haskell_loop.hsis an infinite loop (well, in GHC, it throws a NonTermination exception instead).haskell_term.hsis AFAICT the smallest program that terminates successfully; it even has output! (But only becauseprint 0is slightly shorter thanreturn().)Actually, the smallest syntactically valid file is empty. But in an actual program the
Mainmodule (which a file with no module header is) has to at least contain themainfunction. And similarly,main=0would be shorter but main is expected to have the typeIO ().