Can someone please explain this 'my_if' code in the Metaprogramming Elixir book?

Questions & Help Questions
8

Hi, kindly find below - elixir v1.13.3

iex(92)> ControlFlow.my_if false, do: :here  
nil
iex(93)> ControlFlow.my_if true, do: :here 
:here
iex(94)> ControlFlow.my_if 1 > 2, do: :here
:here
iex(95)> ControlFlow.my_if 1 == 2, do: :here
:here