[R] Lexical scoping is not what I expect

[peter dalgaard]

On Jun 30, 2013, at 14:35 , Duncan Murdoch wrote:

> On 13-06-29 11:58 PM, Greg Snow wrote:
>> If you want to write really confusing code it is possible to do:
>> 
>> `1` <- 2
>> 
>> `1` + 1
>> 
>> and things like that, but it is probably a good idea not to.
> 
> This is actually pretty simple, as the White Knight could tell you.  `1` is what the name of 2 is called.  The name really is "2".  It's called "two", but that's only what it's called.  It really is two.
> 
> Duncan Murdoch
> 

Don't you mean "1" and "one"? As in

> as.name("1")
`1`



-pd


>> 
>> 
>> On Fri, Jun 28, 2013 at 7:30 PM, Rolf Turner <rolf.turner at xtra.co.nz> wrote:
>> 
>>> On 29/06/13 02:54, John Fox wrote:
>>> 
>>>> Dear Duncan and Steve,
>>>> 
>>>> Since Steve's example raises it, I've never understood why it's legal to
>>>> change the built-in global "constants" in R, including T and F. That just
>>>> seems to me to set a trap for users. Why not treat these as reserved
>>>> symbols, like TRUE, Inf, etc.?
>>>> 
>>> 
>>> I rather enjoy being able to set
>>> 
>>>     pi <- 3
>>> 
>>> :-)
>>> 
>>>     cheers,
>>> 
>>>         Rolf Turner
>>> 
>>> 
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>> 
>> 
>> 
> 
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
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