ioref
Should check for change before writing IORef?
There\'s code that reads an IORef and based on some conditions and calculations, creates a new value. Now it writes the new value to that IORef. But there is a chance that it didn\'t get changed at al[详细]
2023-03-12 13:45 分类:问答Difference between State, ST, IORef, and MVar
I am working through Write Yourself a Scheme in 48 Hours (I\'m up to about 85hrs) and I\'ve gotten to the part about Adding Variables and Assignments. There is a big conceptual jump in this chapter, a[详细]
2023-02-21 20:51 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