code_golf-size_for_text_area.rb

# Code Golf: Text Area Tag Edition
# Ladies and Gentlemen here is the function
# Smallest (and least legible) rewrite wins!

def size_for_text_area_tag(string, cols = 40)
  lines = string.split("\n")
  rows = lines.map(&:length).inject(0)  do |sum,len| 
    sum + if len/cols > 0 
            len/cols
          else
            1
          end
  end
  "#{cols}x#{rows+2}"
end