Point-free style capitalize function with Ramda

Question

While writing a capitalize function is trivial, such that:

"hello" => "Hello" "hi there" => "Hi there"

How would one write it using point-free style using Ramda JS?

https://en.wikipedia.org/wiki/Tacit_programming

Answer 1

It would be something like that:

const capitalize = R.compose(
    R.join(''),
    R.juxt([R.compose(R.toUpper, R.head), R.tail])
);

Demo (in ramdajs.com REPL).

And minor modification to handle null values

const capitalize = R.compose(
    R.join(''),
    R.juxt([R.compose(R.toUpper, R.head), R.tail])
);

const capitalizeOrNull = R.ifElse(R.equals(null), R.identity, capitalize);