unsafe-perform-io
How to write a haskell function without IO in type sig by hiding 'state' changes
I wrote a function in haskell that takes a few parameters like Word32, String (ignore currying) and outputs IO Word32. Now, this is a function in the true sense: for the same inputs, the output will a[详细]
2023-03-07 13:46 分类:问答A way to avoid a common use of unsafePerformIO
I often find this pattern in Haskell code: options :: MVar OptionRecord options = unsafePerformIO $ newEmptyMVar[详细]
2023-03-07 03:31 分类:问答Confusion over IORefs to make a counter
I found some sample code, and changed it a little counter = unsafePerform $ newIORef 0 newNode _ = unsafePer开发者_如何转开发formIO $[详细]
2023-01-30 17:46 分类:问答皇家加勒比邮轮多少钱啊?皇家加勒比邮轮上怎么买东西,用人民币可以吗??
小鸟说娱乐 2022-04-18 05:04 开发者_运维技巧 不可以,但如果船上的免税店支持支付宝的话可以用支付宝付款。[详细]
2022-12-25 02:26 分类:问答