From: Lloyd Linklater <lloyd@2live4.com>
Date: 2007-05-10T21:33:08+09:00
Subject: loop questions

I am new to ruby and loving it so far and have beginner's questions
about loops.

I wanted something like this:

for (int i = 1; i <= 5; i++)
  printf("%d\n", [i]);

expecting:

1
2
3
4
5


I wrote this:

i = 5

i.times do
  puts i.to_s
end

And got:

5
5
5
5
5

I am guessing that there is an internal variable that is incremented.
doh!  Is there a way to get the changing variable in there without
having a separate variable in there?

Anyway, I then tried this:

for i in 1..5
  puts i.to_s
end

Which worked as expected.  But I had better use for a descending loop.
In pascal it would be

for i := 5 downto 1 do
  writeln('%d', [i]);

but I could not figure out how to do that in a for loop.  I looked
through several books and could not find the answer.  Any tips?

-- 
Posted via http://www.ruby-forum.com/.