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iOS Closures in Swift Building Standard Library Functions Using Filter

Stanislav Zaichenko
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Stanislav Zaichenko
iOS Development with Swift Techdegree Student 4,929 Points
Posted by Stanislav Zaichenko
.a{fill-rule:evenodd;}techdegree
Stanislav Zaichenko
iOS Development with Swift Techdegree Student 4,929 Points

Why this would not pass the code challenge?

let numbers = [10,423,802,765,943,12,405,230,1348,128,237] let oddValues = numbers.filter { $0 % 3 == 0 } oddValues // [423, 765, 12, 405, 237] what appears in my sandbox

filter.swift 
let numbers = [10,423,802,765,943,12,405,230,1348,128,237]
let oddValues = numbers.filter { $0 % 3 == 0 }

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

Your predicate is numbers that are perfectly divisible by 3. So for the array this will include for example 12 which is perfectly divisible by 3 but not odd. The video @ 0:56 shows how to use filter for even numbers with { 0 % 2 == 0}. Odd numbers would be where this isn't the case { 0 % 2 != 0} or { 0 % 2 == 1}.