Allow iterators to handle sets of anything

[rivatove]

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Description

At this moment, it's not possible to use forEach with certain arguments, despite their availability in HCL, e.g.

• Set of numbers (result of Fn.range)
• Nested sets (result of Fn.chunk)

They are standard library functions and it makes little sense that they can't be used for iteration.

Workaround (Fn.chunk):

const chunkList = Fn.chunklist(value, chunkSize)
const iterator = new ListTerraformIterator(Fn.slice([...Array(100).keys()].map(v => v.toString()), 0, Fn.lengthOf(chunkList)))
...
Fn.element(chunkList, iterator.value)

[DanielMSchmidt]

Good point! I think the limitation lies mostly in the type system, a workaround you can use here is cdktf.Token.asList:

import { Fn, TerraformIterator, Token } from "cdktf";

const chunkList = Fn.chunklist(value, chunkSize)
const iterator = TerraformIterator.fromList(Token.asList(chunkList));