! meta operator not documented

[LLFourn]

I just go burnt because I thought !== was the shorthand for negated === like != is the shorthand for ==. Turns out !== is actually the same as != and the right answer is !===. I went to the docs and noticed:

1. !== is not searchable (!= is)
2. !=== isn't mentioned anywhere /operators

[b2gills]

!=== is not an operator.

It is the ! meta operator combined with the === operator.

!= is just an alias to !== which is also a combination of two operators.

(I personally think that != should be deprecated, partially for this reason)

[coke]

We could allow any search for !foo (perhaps only under Infix/Postfix, etc.) to return foo as a hit.

[LLFourn]

@b2gills I agree with deprecating !=. Fundamentally, its existence was the source of my confusion.

Since ! is a metaoperator I think the if you're searching for !== for example it should just come up with ! (negation meta operator) and == as different results. The negation meta operator page doesn't exist, we only have ! (prefix). I'm going to rename this ticket to reference that instead.

On another point we have a [https://docs.perl6.org/language/operators#Meta_Operators](meta operators) section, but there is nothing listed underneath and it doesn't explain the concept at all.

[AlexDaniel]

Woah, woah… deprecating !=. What a big stretch :)

That said, now that we have ≠, I wouldn't miss != at all.

[AlexDaniel]

It's not that ! metaop is not searchable, it seems we have no documentation for it at all.

[AlexDaniel]

Actually, it is documented in https://docs.perl6.org/language/operators#Negated_Relational_Operators.