FromDigits of list of list

Question

Instead of

FromDigits[{2, 1, 1}, 2] 

with output 11, I want to insert a whole list of lists instead of {2,1,1}.

So if
lis = {{2, 1, 1}, {1, 1, 1}, {1, 0, 0}}
I want as output: {11, 7, 4} but FromDigits[lis, 2] does not work. How can I do it?

Answer 1

The list of lists is read column-wise, so you need to transpose lis:

FromDigits[Transpose[lis], 2]

{11, 7, 4}

If the list is ragged then FromDigits[Transpose[PadRight[lis]], 2]