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?
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 <jonas.esp@googlemail.com> 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/
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?
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/\.
foo = ['a', 'b', 'c']
puts "the content is: #{foo.join(', ')}."
puts arr.join(', ')
On 8/30/08, Dick Davies <rasputnik@hellooperator.net> wrote:
On Sat, Aug 30, 2008 at 9:05 AM, Kless <jonas.esp@googlemail.com> 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: abcputs "#{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/
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 <shortcut...@googlemail.com> 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
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
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
Become an About.com Guide: beaguide.about.com
About.com is part of the New York Times Company
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
--
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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 for details and updates!
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
Become an About.com Guide: beaguide.about.com
About.com is part of the New York Times Company