Each loop question

ruby-talk
1

hi,

Can I use each loop to print alternative element without giving any 'if
condition' inside the loop

a=[1,2,3,4,5]

output would be
2
4
5

···

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

2

I don't understand the logic. If you want to skip one element each
time in the loop, the 5 would not be there, so if you could clarify
the requirements, we could help you better. To skip one element and
print only the even indexes you could do this:

2.0.0p195 :004 > a = (1..10).to_a
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
2.0.0p195 :005 > a.each_slice(2) {|odd,even| puts even}
2
4
6
8
10

Jesus.

···

On Thu, Dec 5, 2013 at 7:49 AM, Raja gopalan <lists@ruby-forum.com> wrote:

hi,

Can I use each loop to print alternative element without giving any 'if
condition' inside the loop

a=[1,2,3,4,5]

output would be
2
4
5

3

hi Jesus.

you are right, 5 should not be there, I made a mistake and gave the code
which i expected, thank you.

···

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

4

hi Robert Klemme

Thank you, that's an another beautiful way.

RAJ

···

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

5

We can even get away completely without block:

irb(main):006:0> puts 2.step(5, 2).to_a
2
4
=> nil

Kind regards

robert

···

On Thu, Dec 5, 2013 at 9:38 AM, Raja gopalan <lists@ruby-forum.com> wrote:

you are right, 5 should not be there, I made a mistake and gave the code
which i expected, thank you.

--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/