# Show elements of array separated **URL:** \ **Category:** ruby-talk\ **Created:** [30 August 2008 08:05 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745 "2008-08-30T08:05:30Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![GinTon](https://avatars.discourse-cdn.com/v4/letter/g/da6949/32.png) [@GinTon](https://rubytalk.org/u/GinTon)\ **Post date:** [30 August 2008 08:05 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/1 "2008-08-30T08:05:30Z")
Why when is showed an array into a variable , it is showed with all characters followed? > **···** > > --------------- > foo = ['a', 'b', 'c'] > puts "the content is: #{foo}" # =\> the content is: abc > --------------- > > I'm supposed that is because at the first it converts the array into a > string. But is there any way of show the elements of array separated? ---
**Author:** ![Dick\_Davies1](https://avatars.discourse-cdn.com/v4/letter/d/22d042/32.png) [@Dick\_Davies1](https://rubytalk.org/u/Dick_Davies1)\ **Post date:** [30 August 2008 09:17 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/2 "2008-08-30T09:17:11Z")
> Why when is showed an array into a variable , it is showed with all > characters followed? > > --------------- > foo = ['a', 'b', 'c'] > puts "the content is: #{foo}" # =\> the content is: abc puts "#{foo.join(',')}" > **···** > > On Sat, Aug 30, 2008 at 9:05 AM, Kless \ wrote: > > > --------------- > > > > I'm supposed that is because at the first it converts the array into a > > string. But is there any way of show the elements of array separated? > > -- > Rasputnik :: Jack of All Trades - Master of Nuns > [http://number9.hellooperator.net/](http://number9.hellooperator.net/) ---
**Author:** ![Robert\_K1](https://yyz1.discourse-cdn.com/flex029/user_avatar/rubytalk.org/robert_k1/32/1830_2.png) [@Robert\_K1](https://rubytalk.org/u/Robert_K1)\ **Post date:** [30 August 2008 11:30 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/3 "2008-08-30T11:30:02Z")
irb(main):001:0\> foo = %w{a b c} =\> ["a", "b", "c"] irb(main):002:0\> foo.to\_s =\> "abc" irb(main):003:0\> foo.join ", " =\> "a, b, c" irb(main):004:0\> Kind regards   robert > **···** > > On 30.08.2008 10:09, Kless wrote: > > > Why when is showed an array into a variable , it is showed with all > > characters followed? > > > > --------------- > > foo = ['a', 'b', 'c'] > > puts "the content is: #{foo}" # =\> the content is: abc > > --------------- > > > > I'm supposed that is because at the first it converts the array into a > > string. But is there any way of show the elements of array separated? ---
**Author:** ![TPReal](https://avatars.discourse-cdn.com/v4/letter/t/e68b1a/32.png) [@TPReal](https://rubytalk.org/u/TPReal)\ **Post date:** [30 August 2008 11:35 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/4 "2008-08-30T11:35:58Z")
Kless wrote: > Why when is showed an array into a variable , it is showed with all > characters followed? > > --------------- > foo = ['a', 'b', 'c'] > puts "the content is: #{foo}" # =\> the content is: abc > --------------- > > I'm supposed that is because at the first it converts the array into a > string. But is there any way of show the elements of array separated? puts foo.inspect It will look exactly like in irb, because irb uses inspect. > **···** > > -- > Posted via [http://www.ruby-forum.com/\](http://www.ruby-forum.com/%5C). ---
**Author:** ![Dan6](https://avatars.discourse-cdn.com/v4/letter/d/d2c977/32.png) [@Dan6](https://rubytalk.org/u/Dan6)\ **Post date:** [30 August 2008 16:07 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/5 "2008-08-30T16:07:17Z")
foo = ['a', 'b', 'c'] puts "the content is: #{foo.join(', ')}." ---
**Author:** ![Michael\_Fellinger1](https://avatars.discourse-cdn.com/v4/letter/m/e47774/32.png) [@Michael\_Fellinger1](https://rubytalk.org/u/Michael_Fellinger1)\ **Post date:** [30 August 2008 09:47 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/6 "2008-08-30T09:47:32Z")
puts arr.join(', ') > **···** > > On 8/30/08, Dick Davies \ wrote: > > > On Sat, Aug 30, 2008 at 9:05 AM, Kless \ wrote: > > > > > Why when is showed an array into a variable , it is showed with all > > > characters followed? > > > > > > --------------- > > > foo = ['a', 'b', 'c'] > > > puts "the content is: #{foo}" # =\> the content is: abc > > > > puts "#{foo.join(',')}" > > > > > --------------- > > > > > > I'm supposed that is because at the first it converts the array into a > > > string. But is there any way of show the elements of array separated? > > > > -- > > Rasputnik :: Jack of All Trades - Master of Nuns > > [http://number9.hellooperator.net/](http://number9.hellooperator.net/) ---
**Author:** ![GinTon](https://avatars.discourse-cdn.com/v4/letter/g/da6949/32.png) [@GinTon](https://rubytalk.org/u/GinTon)\ **Post date:** [30 August 2008 11:45 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/7 "2008-08-30T11:45:01Z")
Thanks! I was too complicated: irb(main):001:0\> foo = ['a', 'b', 'c'] =\> ["a", "b", "c"] irb(main):002:0\> s = '' =\> "" irb(main):003:0\> foo.each {|x| s += x.to\_s + ', '} =\> ["a", "b", "c"] irb(main):004:0\> puts s[0..-3] a, b, c =\> nil > **···** > > On Aug 30, 12:33 pm, Robert Klemme \ wrote: > > > On 30.08.2008 10:09, Kless wrote: > > > > \> Why when is showed an array into a variable , it is showed with all > > \> characters followed? > > > > \> --------------- > > \> foo = ['a', 'b', 'c'] > > \> puts "the content is: #{foo}" # =\> the content is: abc > > \> --------------- > > > > \> I'm supposed that is because at the first it converts the array into a > > \> string. But is there any way of show the elements of array separated? > > > > irb(main):001:0\> foo = %w{a b c} > > =\> ["a", "b", "c"] > > irb(main):002:0\> foo.to\_s > > =\> "abc" > > irb(main):003:0\> foo.join ", " > > =\> "a, b, c" > > irb(main):004:0\> > > > > Kind regards > > > > ``` > > robert > > > > ``` ---
**Author:** ![Robert\_K1](https://yyz1.discourse-cdn.com/flex029/user_avatar/rubytalk.org/robert_k1/32/1830_2.png) [@Robert\_K1](https://rubytalk.org/u/Robert_K1)\ **Post date:** [30 August 2008 12:05 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/8 "2008-08-30T12:05:06Z")
If you want to do it manually, I'd rather do something like this: irb(main):004:0\> s = "" =\> "" irb(main):005:0\> foo.each\_with\_index {|x,i| s \<\< ", " unless i == 0; s \<\< i.to\_s} =\> ["a", "b", "c"] irb(main):006:0\> s =\> "0, 1, 2" irb(main):007:0\> Or even irb(main):010:0\> foo.inject {|a,b| "#{a}, #{b}"} =\> "a, b, c" irb(main):011:0\> ["a"].inject {|a,b| "#{a}, #{b}"} =\> "a" irb(main):012:0\> .inject {|a,b| "#{a}, #{b}"} =\> nil irb(main):013:0\> But note the empty Array case. Kind regards   robert > **···** > > On 30.08.2008 13:45, Kless wrote: > > > Thanks! I was too complicated: > > > > irb(main):001:0\> foo = ['a', 'b', 'c'] > > =\> ["a", "b", "c"] > > irb(main):002:0\> s = '' > > =\> "" > > irb(main):003:0\> foo.each {|x| s += x.to\_s + ', '} > > =\> ["a", "b", "c"] > > irb(main):004:0\> puts s[0..-3] > > a, b, c > > =\> nil ---
**Author:** ![Michael\_Morin](https://avatars.discourse-cdn.com/v4/letter/m/d78d45/32.png) [@Michael\_Morin](https://rubytalk.org/u/Michael_Morin)\ **Post date:** [30 August 2008 14:20 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/9 "2008-08-30T14:20:16Z")
Robert Klemme wrote: > irb(main):010:0\> foo.inject {|a,b| "#{a}, #{b}"} > =\> "a, b, c" > irb(main):011:0\> ["a"].inject {|a,b| "#{a}, #{b}"} > =\> "a" > irb(main):012:0\> .inject {|a,b| "#{a}, #{b}"} > =\> nil > irb(main):013:0\> > > But note the empty Array case. > > Kind regards > >     robert irb(main):006:0\> .inject{|a,b| "#{a}, #{b}" } or "" =\> "" > **···** > > -- > Michael Morin > Guide to Ruby > > > **[Ruby Programming](https://www.thoughtco.com/ruby-programming-4133469)** > > > > Learn the Ruby programming language with simple, step-by-step tutorials. > > Become an About.com Guide: beaguide.about.com > About.com is part of the New York Times Company ---
**Author:** ![David\_A\_Black1](https://avatars.discourse-cdn.com/v4/letter/d/bcef8e/32.png) [@David\_A\_Black1](https://rubytalk.org/u/David_A_Black1)\ **Post date:** [30 August 2008 18:21 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/10 "2008-08-30T18:21:39Z")
Hi -- > **···** > > On Sat, 30 Aug 2008, Michael Morin wrote: > > > Robert Klemme wrote: > > > > > irb(main):010:0\> foo.inject {|a,b| "#{a}, #{b}"} > > > =\> "a, b, c" > > > irb(main):011:0\> ["a"].inject {|a,b| "#{a}, #{b}"} > > > =\> "a" > > > irb(main):012:0\> .inject {|a,b| "#{a}, #{b}"} > > > =\> nil > > > irb(main):013:0\> > > > > > > But note the empty Array case. > > > > > > Kind regards > > > > > >     robert > > > > irb(main):006:0\> .inject{|a,b| "#{a}, #{b}" } or "" > > =\> "" > > Or: > >   .inject {...}.to\_s > > In any case I think this is a job for #join 🙂 > > David > > -- > Rails training from David A. Black and Ruby Power and Light: >    Intro to Ruby on Rails January 12-15 Fort Lauderdale, FL >    Advancing with Rails January 19-22 Fort Lauderdale, FL \* >    \* Co-taught with Patrick Ewing! > See [http://www.rubypal.com](http://www.rubypal.com) for details and updates! ---
**Author:** ![Michael\_Morin](https://avatars.discourse-cdn.com/v4/letter/m/d78d45/32.png) [@Michael\_Morin](https://rubytalk.org/u/Michael_Morin)\ **Post date:** [30 August 2008 19:57 UTC](https://rubytalk.org/t/show-elements-of-array-separated/48745/11 "2008-08-30T19:57:46Z")
David A. Black wrote: > Hi -- > > > Robert Klemme wrote: > > > > > irb(main):010:0\> foo.inject {|a,b| "#{a}, #{b}"} > > > =\> "a, b, c" > > > irb(main):011:0\> ["a"].inject {|a,b| "#{a}, #{b}"} > > > =\> "a" > > > irb(main):012:0\> .inject {|a,b| "#{a}, #{b}"} > > > =\> nil > > > irb(main):013:0\> > > > > > > But note the empty Array case. > > > > > > Kind regards > > > > > >     robert > > > > irb(main):006:0\> .inject{|a,b| "#{a}, #{b}" } or "" > > =\> "" > > Or: > > .inject {...}.to\_s > > In any case I think this is a job for #join 🙂 > > David Using inject you could do something to each element (capitalize, for example) at the same time. Though, you could just use arr.map.join if you wanted to do that. > **···** > > > On Sat, 30 Aug 2008, Michael Morin wrote: > > -- > Michael Morin > Guide to Ruby > > > **[Ruby Programming](https://www.thoughtco.com/ruby-programming-4133469)** > > > > Learn the Ruby programming language with simple, step-by-step tutorials. > > Become an About.com Guide: beaguide.about.com > About.com is part of the New York Times Company