What does this type signature say?
for mapUrl type is: 'a => '_b
. for url: 'a
mapUrl(url)
A first shot. mapUrl is a funtion that takes a value of type 'a and return '_b. The url of type 'a is what we are passing to satisfy the first expected parameter of mapUrl of 'a. How did i do?
Where are docs on type 'a and underscore type?