duplicates:

• SR-2208 Binary operator '/' cannot be applied to two 'Int' operands

Issue Description:

Tested on Xcode 8.1, Swift 3.0.1

When we implement custom comparison operator and either forgot to specify valid return type like this:

public func == (rhs: [[Int]], lhs: [[Int]])
 {
   return rhs.count == lhs.count
}

or specified wrong return type like this:

public func == (rhs: [[Int]], lhs: [[Int]]) -> DarwinBoolean
 {
   return rhs.count == lhs.count
}

we got
Binary operator '==' cannot be applied to two 'Int' operands
instead of expected
'==' produces 'Bool', not the expected contextual result type 'DarwinBoolean'.

When I use usual function I got an expected compiler error.