Kind of a silly question but I have the following formula

`f(x,y)= x+y >0 ? x = y : 0`

Where I incorrectly typed `x==y`

as `x=y`

However now when Input `f(5,7)`

Julia just returns the `y`

value, i.e. `7`

` julia> f(5,7) 7`

as opposed to evaluating `5=7`

which I imagine would yield an error.

I suspect I am missing something very elementary and was just wondering if anyone could explain what was going on. Thanks.