CourseErrorHandling.swift

// Define Error Type 
enum CourseError: Error {
 case noName
}

// Create Structure
struct UdemyCourse {
 let courseName: String
 init(name: String) throws {
  if name == “” { throw CourseError.noName }
  self.courseName = name 
 }
}

// Init & Handle Error
do {
 try UdemyCourse(name: “UIKit Fundamentals with Bob”)
 } catch NameError.noName {
  print(“Bob, you need to enter the name”)
 }

Better to check isEmpty on name instead of name == "". Or better yet use guard to guard that name is not empty.
Like this:

init(name: String) throws {
    guard !name.isEmpty else { throw CourseError.noName }
    self.courseName = name
}