Creating 2 dimensional list matrix

Question

How do you create a list-based matrix of 1\'s with given row and column counts? For example, like:

row=3,column=4 -> [[1,1,1,1],[1,1,1,1],[1,1,1         


        

Answer 1

You can do this with replicate:

onesMatrix rows cols = replicate rows (replicate cols 1)