Map values to any multidimensional array [closed]

Question

Codegolf challenge - mapping values in a multidimensional array

[
  [0, 0, 0],
  [0, 0, 0],
  [0, 0, 0]
]

This 2D array is sick of being so false, and wants to find the truth about life, once and for all. Your task is to write a map function to act as a highway to all the values in this array.

An example implementation of this super function would be if the above array is defined as arr below:

arr.multimap(x => {
  return 1;
}

Which would result in the array being:

[
  [1, 1, 1],
  [1, 1, 1],
  [1, 1, 1]
]

This is a 2D number example, yours has to work in any dimension, and not be dimensionally-bias.

---

The rules

• Must work in any type of dimensional array (1D, 2D, 3D, etc..)
• Least bytes, wins!
• Must only have one callback function which accounts for any level of dimensional interaction
• Meta-languages get fewer points
• Can simply be a function which applies the logic to an array given
• Can be any arbitrary initial value, as long as you can replace it on-command

Answer 1

JavaScript (Node.js), 35 27 17 bytes

-18 thanks to @Arnauld and @Shaggy

f=a=>a?a.map(f):1

console.log(f([
  [0, 0, 0],
  [0, [0, 0, 0], 0],
  [[0, 0, [0]], 0, 0]
]))

Answer 2

Jelly, 1 byte

‘

Try it online!

Replaces n with n + 1.

Because Jelly things.

Note that [x] displays as x in Jelly (single-element lists don't show as lists); the internal data is still a single-element list. You can make it show using Python's str: Try it online!.

Answer 3

Perl 6, 4 bytes

!<<*

Try it online!

Replaces 0s with True. Extremely short for a non-esolang.

   *  # From the input
!     # Boolean not 
 <<   # Each element recursively

Answer 4

Python 2, 29 26 25 bytes

-3 bytes thanks to @JonathanAllan

-1 byte thanks to @JoKing

f=lambda a:a<1or map(f,a)

Replaces 0 with True

Try it online!

Answer 5

Japt, 6 bytes

?¡ßX:1

Try it

¬Íª¡ßX

Try it

Answer 6

JavaScript, 36 bytes

t=>JSON.stringify(t).replace(/0/g,1)

Try it online!