Note, this is not the same as
- Reviewing some awful questions is just a waste of time, can we have a "no comment" close reason for these?
- Can we please have the "Lacks Minimal Understanding" close reason back?
I don't ask for a close reason, I asked the question in order to get feedback from the community about the validity of such questions, as for me it's not yet clear if these are on-topic or off-topic questions.
For reference, see this question: In the Swift programming language, what does "slider:UISlider" mean?.
For someone who knows Swift it's clear what the name: Type syntax means, however the OP doesn't seem to know this.
How should this kind of questions be handled?
None of the standard close reasons seem to apply here:
- the question is not a duplicate
- it doesn't belong to other SE site
- it doesn't ask for libraries and tools
- it's not seeking debugging details
- it's not unclear
- it doesn't ask multiple questions in one
- it's not opinion based
The "Other" close reason can be applied here with a text like "I’m voting to close this question because it asks for mandatory language knowledge", though I'm not sure this kind of close reason is justified, as it's subjective.
Or are this kind of questions on-topic on SO?