alternative-functor
'some' and 'many' functions from the 'Alternative' type class [duplicate]
This question already has answers here: 开发者_Python百科 Haskell - What is Control.Applicative.Alternative good for?[详细]
2023-04-10 20:51 分类：问答Is there a "unit" class? Would it be useful?
Is there a class for types having a single unit value (not sure of the correct terminology here) i.开发者_运维知识库e. types with some pre-defined value?[详细]
2023-04-06 00:23 分类：问答Haskell - What is Control.Applicative.Alternative good for?
I was looking at the Applicative class within Haskell libraries and stumbled across Alternative. What is this class good for? A google search did not reveal anything particularly insightful. And it s[详细]
2023-03-31 12:51 分类：问答MonadPlus definition for Haskell IO
I was just writing a quick bit of code, and I wanted to use the guard function in the IO Monad. However, there is no definition of MonadPlus for IO which means that we cannot use guard in IO land. I h[详细]
2023-01-31 12:22 分类：问答DataSet.GetChanges() return null C#
I try this DataSet ds = new DataSet();开发者_开发技巧 ds.AcceptChanges(); //edit table in ds ds.Tables[0].Rows.RemoveAt(0);[详细]
2022-12-25 05:40 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
加载中,请稍侯......