How to find index of list item in Swift?
arrays, swift
Solution
As swift is in some regards more functional than object-oriented (and Arrays are structs, not objects), use the function "find" to operate on the array, which returns an optional value, so be prepared to handle a nil value:
let arr:Array = ["a","b","c"]
find(arr, "c")! // 2
find(arr, "d") // nil
Use `firstIndex` and `lastIndex` - depending on whether you are looking for the first or last index of the item:
let arr = ["a","b","c","a"]
let indexOfA = arr.firstIndex(of: "a") // 0
let indexOfB = arr.lastIndex(of: "a") // 3
Problem
I am trying to find an `item index` by searching a `list`. Does anybody know how to do that? I see there is `list.StartIndex` and `list.EndIndex` but I want something like python's `list.index("text")`.