自包含的Haskell脚本/新建和emacs

时间:2018-09-16 10:19:14

标签: haskell emacs haskell-stack

我有以下文件,它是一个基于堆栈的脚本:

#!/usr/bin/env stack
-- stack --resolver lts-12.5 script --package protolude 
{-# LANGUAGE TypeApplications  #-} 
{-# LANGUAGE NoImplicitPrelude #-}

module Newton where

import Protolude hiding (repeat)

next n x = (x + n / x ) / 2

repeat f a = a : repeat f (f a)

within eps (a:b:rest) = if abs (a - b) <= eps then b
                                              else within eps (b:rest)

sqrt a0 eps n = within eps (repeat (next n) a0)


main = (print @IO)  $ take 10 $ repeat (next 2) (5 :: Float)
-- >>> take 10 $ repeat (next 2) (5 :: Float)

基于对环境的独立描述,是否有办法进行错误/类型检查的“ Haskell模式”?

是否有一个轻巧的“新建”或nix替代产品可以给我带来好处?

0 个答案:

没有答案