From: "Brian Schröder" <ruby.brian@...>
Date: 2005-10-16T18:36:31+09:00
Subject: Re: Set.new vs Set[]

On 15/10/05, Daniel Berger <djberg96@gmail.com> wrote:
> Hi all,
>
> Ruby 1.8.3
>
> irb(main):001:0> require "set"
> => true
>
> irb(main):002:0> a = [0,1,2,3,4,5,2,3]
> => [0, 1, 2, 3, 4, 5, 2, 3]
>
> irb(main):003:0> set1 = Set.new(a)
> => #<Set: {5, 0, 1, 2, 3, 4}>
>
> irb(main):004:0> set2 = Set[a]
> => #<Set: {[0, 1, 2, 3, 4, 5, 2, 3]}>
>
> Shouldn't the set returned by Set[] also be only the unique values?
>
> Regards,
>
> Dan
>
>
>

bschroed@black:~$ irb -r set

irb(main):001:0> a = [0,1,2,3,4,5,2,3]
=> [0, 1, 2, 3, 4, 5, 2, 3]

irb(main):002:0> Set.new(a)
=> #<Set: {5, 0, 1, 2, 3, 4}>

irb(main):003:0> Set[a]
=> #<Set: {[0, 1, 2, 3, 4, 5, 2, 3]}>

irb(main):004:0> Set[*a]
=> #<Set: {5, 0, 1, 2, 3, 4}>

The third line is a set containing one array, the fourth line is a set
with the elements of an array.

hth,

Brian

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