conversion code snippets in ruby

convert a number from base 10 to base 2 in ruby

convert a number from base 2 to base 16 in ruby

convert it to a struct: `class series def initialize(series) = @series = series def slices(n) raise argumenterror if n > @series.length @series.chars.each_cons(n).map(&:join) end end` in ruby

convert seconds to minutes in ruby

how to change `cols = %w(black, brown, red)` to this: `cols = { "black" => '0', "brown" => '1', "red" => '2'}` in ruby

shorter way to do: ` cols = {black:0, brown:1, red:2} def value(arr) = (cols[arr[0].to_sym].to_s + cols[arr[1].to_sym].to_s).to_i end` ? in ruby