Firebase read and write Data using swift 4.2

Using Swift
1

Hi, I am having trouble using firebase with swift 4.2, Data , I want to grab the data(first name and last name) for a current user logged in, can you please help me how to get the current user first name and last name Code

2

This sounds like an issue for StackOverflow or the Firebase mailing list.

3

Its because I can't post in stackoverflow