I'm trying to get back into boolean algebra after many years without it, I'm currently working on an exercise that asks to verify if p → q or q → p ar
I find myself doing this kind of thing somewhat often: $foo = true; $foo = $foo && false; // bool(false) With bitwise operators, you can use the &
I am filtering rows in a dataframe by values in two columns. For some reason the OR operator behaves like I would expect AND operator to behave and vice versa.