Boolean "not equal to" in Lua (negation of a Boolean conditional)

Question

How do I write an if statement in Lua that negates (inverts/flips) a Boolean variable used as the condition?

For example, in Java, one can write:

boolean a;
a = false;
if (!a) {
    //do something
}

I tried to replicate the above Java code in Lua using the following:

local a
a = false
if (~a) then
    -- do something
end

However, I received an error. How do I write the Lua equivalent of the above Java snippet?

http://www.lua.org/manual/5.2/manual.html#3.4.4 – Keith Thompson Feb 26 '14 at 00:31 — Keith Thompson, Feb 26 '14 at 00:31

score 22 · Accepted Answer · answered Feb 26 '14 at 00:29

22

Lua uses mostly keywords. Use not a instead of ~a.

answered Feb 26 '14 at 00:29

lhf

1 Answers1