There is _absolutley_ no value for a language to provide handy built-in functions that are trivially made available by a library. If we were talking about lang

There is _absolutley_ no value for a language to provide handy built-in functions that are trivially made available by a library. If we were talking about language constructs/semantics or flow-control abilities, I'd have a very different opinion - but not having a json decoder builtin, is no reason to use or not use a language.