Re: For Loop with Steps?

Hi there,

If you're on Ruby 1.8.7 or Ruby 1.9+, you can use the Range class's =
"step" method
with either a for loop, or with blocks:

for x in (0..100).step(5)
  puts x
end

or

(0..100).step(5) do |x|
  puts x
end

You can equivalently do 0.step(100, 5) in place of (0..100).step(5) =96 =
they're equivalent.

If you're on an older version of Ruby, you may only be able to use the =
second version there -
I don't have an older copy ready to check that though.

Not many rubyists use the for loop these days because it has a couple =
quirks, but
they probably won't trip up a beginner.

To find out more, check out the Range class: =
http://ruby-doc.org/core/classes/Range.html

Good luck!

Mike Edgar
http://carboni.ca/

On Feb 3, 2011, at 12:41 AM, Thescholar Thescholar wrote:

> Hello I'm new here :)
>=20
> And I already have a noob question.
>=20
> I am wondering how it's possible to iterate through a for loop =
statement
> by 5 rather than by 1.
>=20
> Let's suppose I want to count from 0..100.
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> Rather than doing this:
> 1,2,3,4,5,6,7,8,9,10....97, 98, 99, 100
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> I would like to count by 5 like this:
> 0, 5, 10, 15, 20, 25, 30... 90, 95, 100
>=20
> Anyone knoew how I could achieve this?
>=20
> Thank you very much in advance!
> And nice to meet you :)
>=20
> --=20
> Posted via http://www.ruby-forum.com/.
>=20