From: Peter Vandenabeele <peter@...>
Date: 2011-09-14T00:17:16+09:00
Subject: Re: Iterate Array and (pretty)print

--0016e644c538ec1a6404acd40a1c
Content-Type: text/plain; charset=UTF-8

On Tue, Sep 13, 2011 at 4:51 PM, Robert Klemme
<shortcutter@googlemail.com>wrote:

> On Tue, Sep 13, 2011 at 4:40 PM, Larry Lv <larrylv1990@gmail.com> wrote:
> > hi,
> >
> > u have output @hosts' elements in the block? why would you add a puts in
> > front of it?
> >
> > u can do it just with Array.join
> >
> > *puts hosts.join("\n")m*
>
> You don't even need the join.
>
> irb(main):001:0> @hosts = ["test1", "test2", "test3", "test4"]
> => ["test1", "test2", "test3", "test4"]
> irb(main):002:0> puts @hosts
> test1
> test2
> test3
> test4
> => nil
> irb(main):003:0>
>

I think this is just an artefact of "puts" and not relevant for the initial
problem.

If the original posters wants to have it in an e-mail, he will probably will
want to interpolate in a template. Using simply the @hosts as is suggested
above will then yield this:

$ ruby <<EOF
@hosts = ["test1", "test2", "test3", "test4"]
puts "#{@hosts}"
> EOF
test1test2test3test4

I think the OP probably needed to use 'map' instead of 'each'.

 pev@pev-desktop:~/a$ ruby <<EOF
@hosts = ["test1", "test2", "test3", "test4"]
hosts_string = @hosts.join("\n")
> puts hosts_string
> EOF
test1
test2
test3
test4

HTH,

Peter










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


-- 
Peter Vandenabeele
gsm: +32-478-27.40.69
e-mail: peter@vandenabeele.com
http://twitter.com/peter_v

--0016e644c538ec1a6404acd40a1c--