query_all with a block

[rdp]

Seems there is a block form to read a query ResultSet, what I reached for today was a block form with types specified:

Basically def query_all(query, *args_, args : Array? = nil, as types : Tuple) with a block to receive the values:

db.query_all("select 'a', 1", as: {String, Int32}) do |mystring, myint|

end

Just might be a nice syntactic sugar. Same for the NamedTuple version. Thoughts?