By the way:

Are there difference between -0 and 0?



On Thu, Aug 6, 2009 at 5:00 PM, Gerlanc, Daniel <
Daniel.Gerlanc@geodecapital.com> wrote:

> b/c
> > class(0)
> [1] "numeric"
>
> > typeof(0)
> [1] "double"
>
> > class(0L)
> [1] "integer"
>
> > typeof(0L)
> [1] "integer"
>
> When you call the ":" function it always returns an integer sequence,
> but when you assign a numeric to an element of the vector it gets
> coerced to the more general type, in this case, numeric.
>
> Note that "is.numeric" returns TRUE for both is.numeric(0) and
> is.numeric(0L).
>
>
>
> Daniel Gerlanc
> Associate Analyst
> Geode Capital Management
> 1 Post Office Sq, Floor 28
> Boston, MA 02109
> Daniel.Gerlanc@geodecapital.com
>
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