This code makes xCode sad under xCode 7 Beta 6(7A192o)

NestedEquality.swift

private func nestedEquality<T>(lhs: [[T]], _ rhs: [[T]], equal: ([T], [T]) -> Bool) -> Bool {
    if lhs.count != rhs.count {
        return false
    }

    for var i = 0; i < lhs.count; i++ {
        if false == equal(lhs[i], rhs[i]) {
            return false
        }
    }

    return true
}

I'm pretty sure == do this to nested arrays if T is Equitable

let nestedA = [[1,2], [3,2]]
let nestedB = [[1,2], [3,1]]

nestedA == nestedB // false
nestedA == nestedA // true

Here is an cleaner and clearer way in my opinion to write that for loop

for (i, _) in lhs.enumerate() where equal(lhs[i], rhs[i]) {
        return false
    }

Thing is the condition varies from time to time, anyways it sovled itself somehow :)

https://github.com/k0nserv/SwiftObjLoader/blob/master/SwiftObjLoader/Geometry.swift#L39-L109