how to filter for feature that does not have field

[samanpwbb]

How do I write a filter to show all features that do not have a particular field?

Something like this doesn't work:

["!in", "class", ""]

And

["in", "class", null]

results in an invalid stylesheet.

[tmcw]

I would like to propose has and !has as operators:

["has", "class"]
["!has", "class"]

[jfirebaugh]

👍 to adding has and !has.

[jfirebaugh]

We did this.