swift dictionary contains key code example
Example 1: swift 5 check if dictionary contains key
if let key = self.dictionary["key"] {
print(key) // returns value
}
// OR
extension Dictionary {
func contains(key: Key) -> Bool {
self.index(forKey: key) != nil
}
}
Example 2: swift dictionary contains key
if let value = self.dictionary["key"] {
print(value) // prints value
}
// OR
extension Dictionary {
func contains(key: Key) -> Bool {
self[key] != nil
}
}