Testing if array contains at least one object that has some property

Question

I want to test if the given array contains at least one object that contains a specific 'string' in it. Is it useful and possible?

Add some code what you've tried till now. – Mukesh May 15 '18 at 08:37 — Mukesh, May 15 '18 at 08:37

score 1 · Answer 1 · answered May 15 '18 at 08:43

1

Try filter().

struct S { let string: String }

let array = [ S(string: "a"), S(string: "b") ]

let hasAtleastOneA = array.filter({ $0.string == "a" }).count > 0

answered May 15 '18 at 08:43

Avi

Can I do something like this in Unit Testing (not in regular code)? :) – TomKo1 May 15 '18 at 09:35
1

There's nothing wrong with doing that in _any_ code. If you have a large array and expect the element near the beginning, you might want an approach that lets your bail early, but otherwise, this works everywhere. – Avi May 15 '18 at 09:45
okay never mind :) – TomKo1 May 15 '18 at 09:50

score 0 · Answer 2 · answered May 15 '18 at 08:43

0

something like this :

let array = ["a","b","c"]

if array.count > 0 {
    for name in array {
        if name.contains("a"){
            print("YES")
        }

    }
}

answered May 15 '18 at 08:43

Osman

You don't need the outer `if`, and you should exit the loop early, if found. – Avi May 15 '18 at 08:44

score 0 · Answer 3 · answered May 15 '18 at 08:44

0

You check do this way,

let filtered = data.filter({$0.contains("test")})

answered May 15 '18 at 08:44

PPL

3 Answers3