[Haskell-beginners] Beginner question.

[Sylvain Henry]

Hi,

https://pointfree.io/ gives:

Input: f x y z = x <> " " <> y <> " " <> z

Output: f = ((<>) .) . flip flip " " . ((<>) .) . (<>) . (<> " ")

So no, it's not something simple!

For clarity I would recommend using the non-point-free version, even in 
the case given in the book. Use point-free only in simple cases like 
`map (+ 1)` where the meaning is obvious.

Sylvain


On 12/09/2023 02:45, Brad Smith wrote:
> I just started working my way through a Haskell book... first time 
> with functional programming. Mid way through the first chapter she's 
> introducing point-free programming with a trivial example 
> transitioning from not point-free...
>
> makeGreeting salutation person = salutation <> " " <> person
>
> to point free...
>
> makeGreeting' = (<>) . (<> " ")
>
> After a little playing with it... it seems to make sense. So I thought 
> I'd try evolving from salutation and name to salutation, first, and 
> last names. But, after a bit of tinkering, I haven't been able to make 
> it work...
>
> I'm sure it's something simple (one way or the other)... any help 
> would be appreciated!
>
> Brad
>
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