How to fetch an String from an AttributedString in Swift?

AttributedStringToString.md

Two options arround AttributedString.CharacterView:

First option:

This option has a performance pitfall, cause it's using a for-in to iterate in characters.

let str: String = String(attrStr.characters)

Second option:

This option has a complexity O(n), in practice is faster than the previous.

let str: String = String(attrStr.characters[...])

source: Swift forum