[R] Working around 256 byte variable names? + trouble opening large file
Gabor Grothendieck
ggrothendieck at gmail.com
Tue Sep 22 06:33:26 CEST 2009
Also you have to be very careful. e.g.
> BOD
Time demand
1 1 8.3
2 2 10.3
3 3 19.0
4 4 16.0
5 5 15.6
6 7 19.8
> attach(BOD)
> Time <- Time + 1
> BOD # oops! BOD was not changed
Time demand
1 1 8.3
2 2 10.3
3 3 19.0
4 4 16.0
5 5 15.6
6 7 19.8
On Tue, Sep 22, 2009 at 12:18 AM, hadley wickham <h.wickham at gmail.com> wrote:
>>> From: hadley wickham <h.wickham at gmail.com>
>>>
>>> Don't use attach?
>>
>> Obvously good advice but why?
>
> Philosophically, it's better to be explicit than implicit, and the
> extremely non-local effects of attach can make debugging difficult.
>
> Hadley
>
>
> --
> http://had.co.nz/
>
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