Can someone explain abt constructor

Answer 1

The search bar can be actually useful if you know how to use it properly:
https://www.sololearn.com/discuss/704677/?ref=app
https://www.sololearn.com/discuss/460694/?ref=app
https://www.sololearn.com/discuss/620097/?ref=app
https://www.sololearn.com/discuss/568689/?ref=app

Answer 2

one example plz

Answer 3

An actual code example?