Crystal notes

(0..10).step(2) do |x|
    puts x
end

---

x = ["the","end","game"]
x[0..1].each() do |y|
    puts y
end

---

# times method

2.times do |n|

    puts n

end

---

# upto method

0.upto(1) do |n|

    puts n

end

---

For ranges it's simple: x..y defines a range from x to y inclusive
and x...y defines a range from x to y exclusive. So if you want the
same behavior as times use 0...n. For x.upto(y) there is only one version which will iterate upto and including y.