From: Chunyun Zhao <chunyun.zhao@...>
Date: 2007-01-17T04:06:52+09:00
Subject: Re: Array Default Values

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Just noticed that a.map!{|e|e?' ':e} throws parse error on my machine, is
this the expected behavior?

Following statements work fine:

a.map!{|e|e||' '}
a.map!{|e|(e)?' ':e}

On 1/16/07, Chunyun Zhao <chunyun.zhao@gmail.com> wrote:
>
> If you know the size of the array, you could do:
>
> a=Array.new(10, " ")
>
> Or you could map the array afterwards:
>
> a.map!{|e|e?' ':e}
>
> On 1/16/07, Drew Olson <olsonas@gmail.com> wrote:
> >
> > I'd like to have my array behave like this: If I add an item to a[5],
> > a[0..5] will be equal to " " rather than nil. I tried to following:
> >
> > irb(main):001:0> a=[" "]
> > => [" "]
> > irb(main):002:0> a[5] = "test"
> > => "test"
> > irb(main):003:0> a.inspect
> > => "[\" \", nil, nil, nil, nil, \"test\"]"
> >
> > Is there any way to have those nils default to " "?
> >
> > Thanks,
> > Drew
> >
> > --
> > Posted via http://www.ruby-forum.com/.
> >
> >
>

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