Outline
In this blog post, we’ll see what Range operator is and how to use it. When you use the Range operator, you should set ordered integers, alphabets in accending order.
The Range operator is Ruby’s unique grammar, and it is often used.
Type of Range operator
Range operator has two types, .. and .... The difference of .. and ... is that ... doesn’t include the last element.
How to use the Range operator
You can use the Range operator like below.
1..4
# 1, 2, 3, 4
1...4
# 1, 2, 3
"a".."c"
# a, b, c
"a"..."c"
# a, b
Complete
As you see above, Ruby has a unique grammar of the Range operator. The Range operator is normally used in the loop.
(1...4).each do |i|
puts i
end
# 1
# 2
# 3
case 79
when 1..50 then print "low\n"
when 51..75 then print "medium\n"
when 76..100 then print "high\n"
end
# high
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