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### Functor & Monad
[Functor & Monad.pdf](https://github.com/JaeYeopHan/FE_study/files/1901513/Functor.Monad.pdf)
syahn updated
6 years ago
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We are interested in obtaining and documenting benchmark results to determine the overhead of using functors with GAT expressions versus just directly using the Julia libraries referenced in instances…
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Applicative Functor
(서로 같은 컨텍스트 포함)서로 다른 컨텍스트를 가진 값 여러 개를 동시에 입력 받고
이들 값들이 모두 유효할 때만, 컨텍스트를 유지하면서 결과를 (필요시 새로운 컨텍스트의 값을) 반환하는 함수를 만들 때 주로 사용?
Monad
컨텍스트를 가진 값을 다른 컨텍스트를 가진 값으로 (또는 기존 컨텍스트를 유지하면…
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There's a new kid on the block: `Selective` functor, a sub-class of `Applicative` and super-class of `Monad` in the traditional hierarchy.
It is special by having a method `select: f (Either a b) -> …
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It would be nice that we go over all of kernel function objects and add one free function overload for each kernel function object. Also, systematically having a _see also_ link to the free function i…
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The typechecker improperly rejects code when expecting a record field of type `'a. ('a, 'b) foo` when `foo` does not depend on `'a`. Here is a minimal example (by discuss user octachron) :
```ocaml
…
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It will be good to have the structure
```Haskell
data ManyF (f :: k -> Type) (xs :: [k])
```
so that for each `x` in `xs` an element of type `f x` is stored.
This is a generalization of `Ma…
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# Functor-and-Variance
[https://damhiya.github.io/posts/Functor-and-Variance.html](https://damhiya.github.io/posts/Functor-and-Variance.html)
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Behaviour shown in the tests [here](https://gist.github.com/ohaaga/d805f2b5d5548baf9caad64558d99a61) isn't what I would expect. I would expect to specify the dictionaries in the "forward" direction, …
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For Map, Set and anything else which takes a comparison function.