applicative
Put two monadic values into a pair and return it
I am playing with Parsec and I want to combine two parsers into one with the result put in a pair, and then feed i开发者_C百科t another function to operate on the parse result to write something like[详细]
2023-04-08 17:33 分类：问答how to mix applicative functors and arrows
i read on Andrew Birkett’s blog Applicative arrows for XML &&& return to pure that we could mix arrows and applicative functors.[详细]
2023-04-08 03:42 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Applicatives compose, monads don't
Applicatives compose, monads don\'t. What does the above state开发者_运维问答ment mean? And when is one preferable to other?If we compare the types[详细]
2023-03-28 05:05 分类：问答Applicative without a functor
I have a type Image which is basically an c-array of floats. It is easy to create functions such as map :: (Float -> Float) -> Image -> Image, or zipWith :: (Float -> Float -> Float) -[详细]
2023-03-27 02:15 分类：问答Could an Applicative Language use Postfix Notation?
I\'ve always found postfix languages like Fa开发者_JAVA百科ctor to be far more readable than prefix (Lispy languages) and infix/postfix languages (all C-style languages, if we include both operators a[详细]
2023-03-21 02:58 分类：问答Is Applicative IO implemented based on functions from Monad IO?
In \"Learn You a开发者_如何学Python Haskell for Great Good!\" author claims that Applicative IO instance is implemented like this:[详细]
2023-03-16 20:51 分类：问答How and why is ap defined as liftM2 id in Haskell
Whilst trying to better u开发者_运维问答nderstand Applicative, I looked at the definition of <*>, which tends to be defined as ap, which in turn is defined as:[详细]
2023-02-17 14:54 分类：问答Computational cost of applicative style
I am using a small database pool in my web app. And this particular function: withPool pool = bracket (takeConn pool) (putConn pool)[详细]
2023-02-15 06:29 分类：问答Naming of `pure` function in Control.Applicative [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.[详细]
2023-01-10 21:59 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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