Описание тега language-concepts
Use this tag to ask about how a particular idea (arrays, lists, tables, search, sort) is implemented in language X or how to understand a basic part of the language.
Often there is a particular concept that isn't quite grouped into any of the other tags, or it is just too embarrassing because it's a "newbie" idea. Or there isn't a concrete problem to solve and you were just wondering about how something works in language X.
If you wanted to ask about which version of the moot() function is used if class A is inherited from class B and implements C, tag it with inheritance..
But also use this tag to point out it's more of a "Hmm..." question than a "How do I solve this" question.