Measurence Engineering Blog - Representing the range of percentage variations from very bad to very good with emojis

smiley.rb

def smiley(variation)
  if variation < -15
    ":rage:"
  elsif variation >= -15 && variation <= -2
    ":disappointed:"
  elsif variation > -2 && variation < 2
    ":neutral_face:"
  elsif variation >= 2 && variation <= 15
    ":slightly_smiling_face:"
  else
    ":smile:"
  end
end