Yeah, 10 - 15 feels like a big number. I generally think knowing a language off the top of your head isn't as important as knowing, logically, how to do something.
If you know I want to do xyz because of abc, without falling into the xy problem, you can easily google how to do that in a said language and the more you use the language the more it will stick with you.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
Yeah, 10 - 15 feels like a big number. I generally think knowing a language off the top of your head isn't as important as knowing, logically, how to do something.
If you know I want to do xyz because of abc, without falling into the xy problem, you can easily google how to do that in a said language and the more you use the language the more it will stick with you.