What does == and ~= mean?

The == Operator

The == operator is the operator for comparing equivalent values.

val1 == val2 - if val1 is equivalent to val2.

local val1 = 4
local val2 = 2 * 2

if val1 == val2 then
    print('Equivalent!')
end

The above code would print Equivalent! because val1 is equivalent to val2.

The ~= Operator

The ~= operator is the comparing non-equivalent values! The exact opposite of ==.

val1 ~= val2 - if val1 is not equivalent to val2.

local val1 = 4
local val2 = 1

if val1 ~= val2 then
    print('Not Equivalent!')
end

The above code would print Not Equivalent! because val1 is not equivalent to val2.

Both == and ~= are used in if or repeat - until functions. == means 'is equal to', and ~= means 'is NOT equal to'.

Example:

if Value == true then
    --Code
    elseif Value ~= true then
    --Other code
end