I have a custom scrollbar. Since I did that, the arrows of the scrollbar are not shown anymore. .scrollbar::-webkit-scrollbar-thumb { background-color: ##00a7e0; } .scrollbar::-webkit-scrollba...

I am building a vehicle tracking application and i am using agm-map-marker to display the vehicles that were located like this in the image, And Livetracking.component.html code is, <agm-map ...

Is there an implementation of "proc" notation for arrows in F#? In Haskell, it looks like this: mean2 :: Fractional a => Circuit a a mean2 = proc value -> do t <- total -< va...

I am trying to understand the "Streams as arrows" section in John Hughes' famous "Generalising Arrows to Monads". To be more precise, I am interested in writing down the Fibonac...

I'm trying to add arrows to the x and y axes of the scrollbar, here's my scrollbar: http://jsfiddle.net/Nk3NH/ And I want this arrow(image) for the two axes: https://i.sstatic.net/i6Un2.png I'm lo...

Please refer to the table here. http://www.funkkopfhoerer-test.com/vergleichstabelle-funkkopfhoerer/ I'm using Table Plugin and created a custom scrollbar on top of it. But It wasn't showing up on ...

I am creating a ggplot chart where I want to have some arrows between two points. The main task is easily done with geom_line(arrow = arrow()). However, I want to have some "beautiful" thick arrows...

Here's the SO post I'm going to refer to. Also, I'm going to use the same snippets as the OP in that question in order not to separate the materials. It is widely known that an ArrowApply instance ...

I wonder whether it is possible to implement factorial using Control.Arrow.loop. loop :: ArrowLoop a => a (b, d) (c, d) -> a b c One of the evident ideas is to implement a somehow terminat...

There is a bit of overlap between Bifunctor and Arrow methods: class Bifunctor p where first :: (a -> a') -> p a b -> p a' b second :: (b -> b') -> p a b -> p a b' bimap :: (a...

When learning about Control.Arrow and Haskell's built-in proc notation, I had the idea that this language might prove very useful as an eDSL for general monoidal categories (using *** for tensor an...

I recently read the very interesting paper Monotonicity Types in which a new HM-language is described that keeps track of monotonicity across operations, so that the programmer does not have to do ...

I am learning Arrow following the tutorial programming with arrows. I've typed the following code according to the paper except that the SF is defined by data, not by newtype as in the paper (actua...

Description of loop from Control.Arrow: The loop operator expresses computations in which an output value is fed back as input, although the computation occurs only once. It underlies the rec va...

Arrows seem to be gaining popularity in the Haskell community, but it seems to me like Monads are more powerful. What is gained by using Arrows? Why can't Monads be used instead?

I was reading this, which said: Well, the point is that arrow notation forbids some computations that do notation allows. In particular all “arrow actions” must be “statically” known“. and it ...

I've read the arrow notation documentation page, but it's not entirely clear to me what the "pipe brackets" used under "7.10.3. Defining your own control structures" desugar into. Given the exampl...

I tried to learn the meaning of arrows, but I didn't understand them. I used the Wikibooks tutorial. I think Wikibook's problem is mainly that it seems to be written for somebody who already unde...

Using proc notation for Arrow seems to kill performance in my project. Here is a toy example of the problem: We define Coroutine newtype (mostly copying from Generalizing Streams into Coroutines) ...

I am trying to draw a graph with an arrow and I would like the label of the arrow to be in between the line (not above or below) like this: how the output should look like : I'm using the tikz li...

I understand that an Arrow is a Profunctor, where one can transform its input and its output, but can one map an arrow over a Functor? I understand that as-asked the answer is "no", since the fmap...

The ContT monad transformer has a interesting property: If there is a * -> * type such as Set, that has well-defined monadic operations, but can't have a Monad instance due to some constraints (...

import Control.Lens import Control.Lens.TH data Foo = Foo { _bar, _baz :: Int } makeLenses ''Foo Now if I want to modify both int fields, I can do barbaz :: Setter' Foo Int barbaz = sets $ \f...

There is an archived thread on reddit which says essentially conduit/pipes cannot be arrows b/c arrows need to be synchronous. The thread is linked here https://www.reddit.com/r/haskell/comments/rq...

According to the Control.Arrow documentation, for many monads (those for which the >>= operation is strict) the instance MonadFix m => ArrowLoop (Kleisli m) does not satisfy the right-tigh...