If you are coming from using python, then you will be used to using a lot of
if...elif...else statements to catch conditions in variables. Sometimes this can be tedious - in Ruby it is easier to use
Let’s assume that you are checking for ages of people and want to classify them according to their age (it might be a sceranio of runners in a race and you want to find out who won each age range). Here you can use
group = "" age = gets.chomp.to_i case age when 0..17 group = "Under 18s" when 18..25 group = "18s to 25s" when 26..30 group = "26s to 30" when 30..Float::INFINITY group = "Over 30s" end puts group
This allows us to somewhat simplify the conditions that might come about from different ages.