RA.overWhen / RA.overUnless

Sometimes, I add a helper like this to my codebase :

const R = require('ramda');
const overNonNil = curry((lens, f, state) => {
  if (RA.isNotNil(R.view(lens, state))) {
    return R.over(lens, f, state);
  }
  return state;
})

need opinions about this function.

According to #348, should we add RA.overNonNilProp, RA.overNonNilPathand RA.overNonNilIndex ?

Edit

(according to @Undistraction advices)

Implement a more generic RA.overWhen instead of RA.overNonNil

RA.overWhen

const overWhen = R.curry((predicate, lens, f, state) => {
  if (predicate(R.view(lens, state))) {
    return R.over(lens, f, state);
  }
  return state;
})

and add RA.overPropWhen, RA.overPathWhenand RA.overIndexWhen. (according to implementation below)

[char0n]

overWhen is legitimate. Regarding the other derived functions…let’s hold until we clear it out in #348

[crvouga]

Why invent new constructs?

R.over(lens, R.when(predicate, transformation), x)