Eh—I don't know. Code a test or two and something basic with just the lang? Sure.
The whole stack? Takes about a month to get productive and about three months to really internalize. Think interned strings in Python vs symbol exhaustion in Ruby. Or serializers in Django Rest Framework working as both input validators and output generators compared to stock Rails views.
Super similar languages with lots of similar frameworks and libraries, but they have these edge cases that still crop up.
The whole stack? Takes about a month to get productive and about three months to really internalize. Think interned strings in Python vs symbol exhaustion in Ruby. Or serializers in Django Rest Framework working as both input validators and output generators compared to stock Rails views.
Super similar languages with lots of similar frameworks and libraries, but they have these edge cases that still crop up.