Re: The 4 negations of Lua

[Rena <hyperhacker@...>]

On Sep 16, 2016 3:13 PM, "Martin" <eden_martin_fuhrspam@gmx.de> wrote:
>
>
>
> On 16-09-05 12:29 PM, Soni L. wrote:
> > Lua has 4 forms of negation:
> >
> > -
> > ~
> > not
> > ~=
> >
> > Yet only 2 of them can be overloaded.
> >
> > It's cool that Lua has 4 forms of negation tho.
>
> As I understand "-" is for general numbers, "~" for integer numbers,
> "not" for general logic and "~=" for equivalence logic. From them only
> "~=" may be dropped and reformulated as "not ==".
>
> Also you may count table.insert(), t[#t + 1], "+" and ".." as addition.
>

"-" is mathematical negation. "~" is bitwise inversion. "not" is boolean inversion/negation. "~=" is shorthand for "not ==".