map_O_spread

Deep copy function for ANY variable

The map_O_spread function is a super short "deep copy" function for ANY variable type.

Why that name?

The idea comes from the copy of an array:

array.map(O=>{
  return [...O]
})

Notice the .map() method... The O argument... The spread operator. Actually, Map-O-Spread is a a maple sugar brand: Map-O-Spread on Amazon heheh ;)

Now, the above is not a deep copy, but a copy of the "1st level" of the variable.

Why two functions?

I wanted it to be recursive AND to work for ALL variable structure. It worked well quite fast on nested arrays: Map-o-Spread version 0 But failed with an object... So imagine with a complex object like:

{
  a: [ 1,2,3 ],
  b: {
    c: [ "hello", "world"],
    d:  4,
    e: myfunction,
    f: null
    g: {
      [
        {h: 5, i: 6},
        {h: 7, i: 8}
      ]
    }
  }
}

Why two functions?

Additionnally... It got more complicated when I noticed that the JS typeof() was returning object for both object AND arrays! See here: typeof-NOT-returning-the-correct-type

I can't figure out why JS never fixed that [1] Am I the first one to notice? It can't be!!!

So I also made a getRealType() function to fix that problem.

And I left them as separate functions, since the getRealType() may also be useful alone.

Notes:

[1] Only tested in Chrome. It may be a JS interpreter issue...

=== LICENCE : MIT

Made on 2019-11-10 while attending a Concordia Bootcamp: https://concordiabootcamps.ca/

You can use and modify it freely, but I would appreciate you mention my Git link, if you use it as-is in your project. Enjoy!