I wrote the following question:
Does anyone know any examples that use this function or can write a simple example oneself?
This question uses "does" and "can" to ask about knowing or ability (to write such an example). I'm not sure about the correct way to use "does" and "can" in a single question. Could you please tell me whether my question is correct or not?
By the way, I'm also not sure about oneself - maybe it must be themselves?
Does... know is grammatically correct, but Does... can write is not. One way this could be corrected is by changing the subordinate clause to independent:
Does anyone know any examples that use this function, or can anyone write a simple example oneself?
It could also be rewritten as:
Can anyone provide an example of the use of this function or write a simple one?
This keeps verb usage in parallel; i.e. Can... provide and Can... write.
I agree with @DrMoishe Pippik's answer regarding verb usage.
With respect to "oneself" vs. "themselves," I would go with "themselves" or even "themself." I think "oneself" can only be used as a reflexive pronoun where the pronoun "one" is used, or where no other pronoun is used but "one" is understood, e.g. (from https://www.merriam-webster.com/dictionary/oneself)
It is important [for one] to have good feelings about oneself.
To me, using "oneself" with any other pronoun (even if it contains the word "one") sounds off. Using the sentence from above as an example:
It is important for anyone to have good feelings about oneself.
vs.
It is important for anyone to have good feelings about themself.
It is important for someone to have good feelings about oneself.
vs.
It is important for someone to have good feelings about themself.
It is important for a person to have good feelings about oneself.
vs.
It is important for a person to have good feelings about themself.
In all of these examples, I think "themself" (or maybe "themselves," plural) sounds more correct than "oneself."
