each_with_index!

[Wolwer1nE]

fast_matrix/lib/fast_matrix.rb

Line 42 in 3ec9f26

def each_with_index!

each with bang ! is not common parctice in ruby, since each usually returns original unchanged object. Maybe this method should be split into chain of map.with_index

https://stackoverflow.com/questions/4697557/how-to-map-with-index-in-ruby