typeof([2,2]) !=? int[2]

[bearophile]

This is an answer to just your title question.

A lot of time ago typeof([2,2]) was int[2]. This was efficient, 
but in most cases this was a source of troubles and bugs. So now 
a [2,2] is a heap-allocated dynamic array of type int[]. Some 
persons have askes for a fixed-sized array litera, like s[2,2] 
but nothing has happened on this so far.

Bye,
bearophile