TIL you can do Python-style decorators in Haskell, kinda

For example (flip -> f) = \x y -> x - y

@EsolangingFruit I don't quite get what you are trying to convey here. Is that meant to be a view pattern or something from pyhon on the left of the equals?

@Potato44 In Python, the following code:

@dec
def foo(): ...

is equivalent to

def foo(): ...
foo = dec(foo)

Similarly, (dec -> f) = ... in Haskell is equivalent to f = dec (...).

It's just a syntactical thing.

@EsolangingFruit That is quite an interesting use of view patterns, I never thought of using them anywhere but in function arguments.

@EsolangingFruit how exactly is this supposed to work? (I tried it in ghci but got an error?)

@flawr Try with -XViewPatterns

Also, I see what it does, but it isn't readable for me

Oh I see

Wow there are so many cool extensiosn