How to replace question marks inside a string with the values of an array?

Question

Given the string \'Hello ?, welcome to ?\' and the array [\'foo\', \'bar\'], how do I get the string \'Hello foo, welcome to bar\' in

Answer 1

Let's build a replaceWith function:

const replaceWith =
  (...str) =>
    (fallback) =>
      str.length === 0
        ? fallback
        : str.shift();

It's a curried function: it takes a list of replacement strings and returns another function which will return the replacements one by one:

const replacements = replaceWith('