From: Wu Ning <ngloom@...>
Date: 2008-01-03T21:11:29+09:00
Subject: Re: has any one tried this?


Thanks,
I know what's going on now,
:)

Daniel Lucraft wrote:
> Wu Ning wrote:
>> My ruby version is 1.8.6
>> a = Array.new(3,Array.new())
>> a[2]<<1
>> puts a
>> 
>> the result of a is
>> [[1], [1], [1]]
>> in irb..
>> 
>> I don't understand why.
>> I just wannt insert into a 1 into the third array of a.
> 
> After a = Array.new(3,Array.new()), a is an array containing three 
> references to the same object. There is only one array, but it is 
> repeated three times.
> 
> Do
> a = []; 3.times { a << [] }
> and you'll have three different arrays.
> 
> best,
> Dan

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