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iOS Closures in Swift Building Standard Library Functions Using Map

Posted by STEVEN PENA
STEVEN PENA
13,928 Points

Use the map function to iterate over the numbers array and transform the values to their string representations. Assign

am a little struck on this question

map.swift 
let numbers = [1,2,3,4,5]

1 Answer

Clinton Johnson
Clinton Johnson
28,714 Points
Clinton Johnson
Clinton Johnson
28,714 Points

STEVEN PENA 

let numberStrings = numbers.map { String($0) }

// Detailed Explanation Below:
1. The results will be stored in a Constant named "numberStrings" so create that first as above "let numberStrings =...".
2. What gets stored in the constant ??? that is the numbers.map as above
3. Now the fun part is the { String($0) }... <-- This is simple saying that whatever value/argument (represented by: $0) that we get cast it as a String(meaning return it in a string form).

Hope this helps!!!!
Happy coding, message me if you need anything !!!!