Comments on: The Basics of Ruby Arrays

By: Ramnareshkk

Ramnareshkk — Mon, 31 Jan 2011 05:18:00 +0000

I want print all elements in a multi dimensional array.
Is there any way to do it?

By: Namtax

Namtax — Sun, 14 Nov 2010 18:32:00 +0000

Thanks for the run down, I am learning ruby and this will be very useful.

By: Anonymous

Anonymous — Mon, 25 Oct 2010 10:02:00 +0000

I like your blog and such a useful information sharing. I appreciate your blog and thanks for that. - Magento Templates

By: KW Variant 3

KW Variant 3 — Sun, 10 Oct 2010 08:40:00 +0000

The car’s suspension system includes leaf springs, a stabilizer bar, a suspension arm, a shock absorber and/or MacPherson struts.

By: Nirmik

Nirmik — Thu, 02 Sep 2010 07:47:28 +0000

it is really nice and useful

By: ET

ET — Wed, 10 Mar 2010 18:39:41 +0000

the previous two examples will start with the second element in the array.

if you want to print the first three elements of the array use this:

my_vitamins[0..2].each do |vitamin|
puts “#{vitamin} is tasty!”
end

By: karatedog

karatedog — Thu, 14 Jan 2010 22:14:50 +0000

An exhausting line-by-line example of inject: http://blog.jayfields.com/2008/03/ruby-inject.html

By: karatedog

karatedog — Thu, 14 Jan 2010 22:13:41 +0000

With a little modification you can narrow down the full array before iterating through it.

my_vitamins[1..x].each do |vitamin|
puts “#{vitamin} is tasty!”
end

By: phattymatty

phattymatty — Thu, 03 Dec 2009 16:36:53 +0000

Thanks for posting this however it looks like you have an error in the inject example. I tried your example and kept getting the sum equal to the visit_count of the last item in the array. Instead of:

total_visits = stats.inject(0) {|sum, stat| sum = stat.visit_count}

it should be (notice the “+” in the block):

total_visits = stats.inject(0) {|sum, stat| sum + stat.visit_count}

http://ruby-doc.org/core/classes/Enumerable.html#M003129 has the documentation for this.

Again, thanks for posting…you got me headed in the right direction.

By: semprealbero

semprealbero — Fri, 24 Jul 2009 19:29:19 +0000

Am a newbie with Ruby. I’ve been through so many references and yours is helping me learn array in simplest terms. Thank you so much.

By: johnchristopher

johnchristopher — Tue, 21 Jul 2009 21:51:53 +0000

Something like that ?
y = 3
y.times do |x|
puts “#{my_vitamins[x]} is tasty!”
end

By: jason

jason — Fri, 17 Jul 2009 07:06:36 +0000

How do I use the form of -

my_vitamins.each do |vitamin|
puts “#{vitamin} is tasty!”
end

to print just the first x elements from the array ?
(i.e instead of “each”, I only want the first x elements)

Thanks.

Jason

By: PHP Developer

PHP Developer — Fri, 22 May 2009 13:52:46 +0000

Thank you for posting nice article on Ruby Array it's very use full for me.

By: Auto Blogs

Auto Blogs — Sun, 26 Apr 2009 22:22:16 +0000

I've got a great start now.. :) Ruby used to scare me. lol

By: Auto Blogs

Auto Blogs — Sun, 26 Apr 2009 22:22:00 +0000

I've got a great start now.. :) Ruby used to scare me. lol

By: gabriellestates

gabriellestates — Mon, 02 Feb 2009 04:14:11 +0000

Very well done - you've taken something very complex and broken it down so well I think I finally get it! Thanks :)

Pharmacy providing brand name and generic prescriptions drugs with worldwide delivery.

By: gabriellestates

gabriellestates — Mon, 02 Feb 2009 04:14:00 +0000

Very well done - you've taken something very complex and broken it down so well I think I finally get it! Thanks :)Pharmacy providing brand name and generic prescriptions drugs with worldwide delivery.