Haskell unit testing
I'm new to haskell and working on unit testing, however I find the ecosystem to be very confusing. I'm confused as to the relationship between HTF and HUnit. In some examples I see you set up test cases, export them in an tests list, and then run in ghci with runTestsTT (like this HUnit example). In other examples, you create a test runner tied into the cabal file that uses some preprocessor magic
OverloadedStrings を使うと文字列を、Text、ByteString リテラルとして扱ってくれる。 - sirocco の書いてもすぐに忘れるメモ
OverloadedStrings 言語拡張を使うとダブルクオートで囲んだ文字列を、Text、ByteString リテラルとして扱ってくれるようになります。あどけない話・Haskellライブラリ入門 (2011年版) {-# LANGUAGE OverloadedStrings #-} module Main where import qualified Data.Text as T import GHC.Exts( IsString(..) ) greet :: T.Text -> T.Text greet "hello" = "world" greet other = other greetTest :: T.Text greetTest = greet "hello" main = do print $ greet "hello" print $ greet "fool" > :m
Shell scripting with type-safety using Haskell
Why is scripting usually done in dynamically typed languages? This article applies strong typing in Haskell to shell programs. The end result can still be light-weight but also save time by reducing runtime errors. We can use a DSL in Haskell (a strongly-typed functional programming language) for shell-scripting that looks very similar to bash. main = shelly $ do apt_get "update" [] apt_get "insta
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