What does operator ~= mean in Lua?

Question

What does the ~= operator mean in Lua?

For example, in the following code:

if x ~= params then

Solution 1

the ~= is not equals

It is the equivalent in other languages of !=

Solution 2

The operator ~= is exactly the negation of equality (==).

See docs.

Solution 3

During compilation it gets translated to not a == b.

Solution 4

~= in Lua, is just like doing != in other languages like C#.

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Comments

[Alejandro Simkievich]

thanks a lot caulitomaz. yes, it makes a lot of sense - almost obvious in retrospective.

[Alejandro Simkievich]

thanks a lot for pointing to the docs pushkin - for some reason googling ~= did not work for me. But now that I see the code, it makes a lot of sense.

[Brant Sterling Wedel]

Makes no sense actually, since ~ is the mathematical symbol of approximately equal ... would maybe make sense if it was the same as an == in js tho :p

[Brant Sterling Wedel]

I suppose on second thought A != B mathematically means factorial of A is equal to B ... so maybe I can forgive Lua being written in C but not just using the C style != operator :p