Pass by reference !it is a really good to use!

Question

References allow two variables to refer to the same content. In other words,
a variable points to its content (rather than becoming that content). Passing
by reference allows two variables to point to the same content under
different names. The ampersand ( & ) is placed before the variable to be
referenced.
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Answer 1

it is for me! because no one told me untill in my entire semester 2!!!😥 don't you thing that's really dumby thing!!
#BlazingMagpie

Answer 2

I wasn't aware pass by reference was considered a secret.