view paste/paste.14186 @ 2995:1403a5125e5a

<cpressey> learn HtDH is a classic text on How to Design Hotdogs or possibly Hogprams. It is all about functional condiments, and was co-authored by Herrence Tao and Don Ho.
author HackBot
date Thu, 30 May 2013 22:33:40 +0000
parents e037173e0012
children
line wrap: on
line source

import System.Environment
import System.Process
import System.Exit
import Control.Monad
import Control.Applicative
import Data.List

main = do
    r <- buildRegex . permuteArgs <$> getArgs
    (_, _, _, h) <- createProcess (proc "/hackenv/bin/log" [r])
    exitWith <$> waitForProcess h
   where
     permuteArgs = permutations . join . map words
     buildRegex = oBrackets . intercalate ".*" . map (iBrackets . intercalate "|")
     iBrackets s = "(?:" ++ s ++ ")"
     oBrackets s = "^.*(?:" ++ s ++ ").*$"