Hi all!
I got stucked with the task.
I need to write a method which iterates over Teachers and returns ones if conditions met.
Here is my code:
struct School {
var name: String
var teachers: [Teacher]
func getTeacher(withID id: Int) -> [Teacher]? {
for teacher in teachers {
if teacher.id == id {
return teacher
} else {
return nil
}
}
}
I know I do something wrong, coz it gives me an error…but I cannot understand what and why 
error: SchoolDatabase.swift:20:16: error: cannot convert return expression of type ‘Teacher’ to return type ‘[Teacher]?’
return teacher
Can someone please explain what is wrong and help, please
url: https://www.codecademy.com/courses/learn-intermediate-swift/projects/swift-optionals-school-database