Question

I’m trying to translate my java program into Haskell. My goal is to split my string into several string and place these within a list.

This is my code so far

import Char
import IO
import Text.Regex

translate :: String -> Int
translate input = 
    testcode(splitRegex (mkRegex "\\s") input)

testcode does some tests depending on what the first value is, like for example(made this on the fly not gotten this far yet)

testcode :: [String] -> Int -> Int
testcode [] 0
testcode (x:xs)  n
     |(x=="test") = 1
     |otherwise = testcode xs

My compile error that I keep getting is the following:

Could not find module `Text.Regex'
Perhaps you meant Text.Read (from base)

How do I import Text.Regex?

Answer 1

Text.Regex is in the regex-compat Package. Did you install it?

Cabal is the package manager for haskell: http://www.haskell.org/haskellwiki/Cabal/How_to_install_a_Cabal_package

To install the regex package, enter the following an a shell:

cabal install regex-compat

To find out to which package a function belongs, I use Hayoo!, which is a search engine for the haskell package repository Hackage.