a = %w(a b c d e f g) ;
puts "a.length = #{a.length}" ;
b = a[1,-1] ;
puts "b.length = #{b.length}" ;
Why is array b nil after the subarray? I expect it to be equal to "a"
minus the first element.
Todd
···
--
Posted via http://www.ruby-forum.com/.
Todd Burch wrote:
a = %w(a b c d e f g) ;
puts "a.length = #{a.length}" ;
b = a[1,-1] ;
puts "b.length = #{b.length}" ;
Why is array b nil after the subarray? I expect it to be equal to "a"
minus the first element.
Todd
I think I see the issue (the issue = my error). The "-1" is the last
element of the array, and the method is epxecting a length, not an
element.
Todd
···
--
Posted via http://www.ruby-forum.com/\.
Hi,
At Fri, 24 Aug 2007 08:14:15 +0900,
Todd Burch wrote in [ruby-talk:266016]:
> a = %w(a b c d e f g) ;
> puts "a.length = #{a.length}" ;
>
> b = a[1,-1] ;
> puts "b.length = #{b.length}" ;
>
> Why is array b nil after the subarray? I expect it to be equal to "a"
> minus the first element.
>
> Todd
I think I see the issue (the issue = my error). The "-1" is the last
element of the array, and the method is epxecting a length, not an
element.
Maybe, don't you want to try a[1..-1]?
···
--
Nobu Nakada
Nobuyoshi Nakada wrote:
Hi,
Maybe, don't you want to try a[1..-1]?
Very good! Works fantastic. Thanks!
I had coded b=a[1,a.length-1] but I like your solution better.
Todd
···
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Posted via http://www.ruby-forum.com/\.