Re: [Haskell-cafe] flip1 through flip9, useful?

On 01/14/2014 01:06 AM, Ivan Lazar Miljenovic wrote:

On 14 January 2014 16:48, Christian Marie wrote:

...

I have defined a bunch of functions like this:

-- | Move the fourth argument to the first place rotate4 :: (a -> b -> c -> d -> e) -> (d -> a -> b -> c -> e)

-- | Reverse four arguments flip4 :: (a -> b -> c -> d -> e) -> (d -> c -> b -> a -> e)

I decided to upload this as a library to hackage, as I personally find it useful, especially for writing FFI bindings.

It seems like I can't be the first to write a library like this though, am I missing something obvious? Is this useful or stupid? Does it exist already?

Full definition here:

https://github.com/christian-marie/flippers/blob/master/src/Control/Flippers...

Except for completeness, I don't see the point of rotate1 and flip1.

It could be nice if you're attempting something insane with e.g. template haskell and don't want n=1 to be a special case.