On Wed, Mar 16, 2011 at 1:12 PM, wrote:
> On Wed, 16 Mar 2011, Gabor Grothendieck wrote:
>
>> On Wed, Mar 16, 2011 at 12:16 PM, wrote:
>>>
>>> On Wed, 16 Mar 2011, Gabor Grothendieck wrote:
>>>
On Wed, Mar 16, 2011 at 11:49 AM, wrote:
>
> Just as a heads-up: it is likely that unl
>> Its useful for being able to set defaults for arguments that do not
>> have defaults. That cannot break existing programs.
>
> Until the next program decides do co change those defaults and either
> can't or does and you end up with incompatible assumptions. It also
> make the code with the ad
On Wed, 16 Mar 2011, Gabor Grothendieck wrote:
On Wed, Mar 16, 2011 at 12:16 PM, wrote:
On Wed, 16 Mar 2011, Gabor Grothendieck wrote:
On Wed, Mar 16, 2011 at 11:49 AM, wrote:
Just as a heads-up: it is likely that unlocking the bindings in base
for pi, T, F, probably all BULTIN and SPEC
On Wed, 16 Mar 2011, Barry Rowlingson wrote:
On Wed, Mar 16, 2011 at 4:16 PM, wrote:
That would defeat the purpose. Unlocking things in base may be useful
for experimenting or debugging but it is not a good idea otherwise.
You are making experimenting in R more awkward? Then I'm throwing
On Wed, Mar 16, 2011 at 4:16 PM, wrote:
> That would defeat the purpose. Unlocking things in base may be useful
> for experimenting or debugging but it is not a good idea otherwise.
You are making experimenting in R more awkward? Then I'm throwing
"That would defeat the purpose" straight back
On Wed, Mar 16, 2011 at 12:16 PM, wrote:
> On Wed, 16 Mar 2011, Gabor Grothendieck wrote:
>
>> On Wed, Mar 16, 2011 at 11:49 AM, wrote:
>>>
>>> Just as a heads-up: it is likely that unlocking the bindings in base
>>> for pi, T, F, probably all BULTIN and SPECIAL functions, and possibly
>>> more
On Wed, 16 Mar 2011, Gabor Grothendieck wrote:
On Wed, Mar 16, 2011 at 11:49 AM, wrote:
Just as a heads-up: it is likely that unlocking the bindings in base
for pi, T, F, probably all BULTIN and SPECIAL functions, and possibly
more, will start signaling warnings in the near future. Doing thi
On Wed, Mar 16, 2011 at 11:49 AM, wrote:
> Just as a heads-up: it is likely that unlocking the bindings in base
> for pi, T, F, probably all BULTIN and SPECIAL functions, and possibly
> more, will start signaling warnings in the near future. Doing this
> may be useful at times for debugging but
On Wed, Mar 16, 2011 at 6:04 AM, Michael Friendly wrote:
> On 3/15/2011 2:23 PM, Uwe Ligges wrote:
>>
>>
>> On 15.03.2011 15:53, xiagao1982 wrote:
>>>
>>> Hi, all,
>>>
>>> Does R have a "const object" concept like which is in C++ language? I
>>> want to set some data frames as constant to avoid be
Just as a heads-up: it is likely that unlocking the bindings in base
for pi, T, F, probably all BULTIN and SPECIAL functions, and possibly
more, will start signaling warnings in the near future. Doing this
may be useful at times for debugging but it can mess up assumptions
others make about how t
On 16/03/11 15:04, Gabor Grothendieck wrote:
On Wed, Mar 16, 2011 at 10:54 AM, Allan Engelhardt wrote:
[...]
Yes, but you can still print(base::pi) and rm(pi) to get back to our flat
world, and you can't
assign("pi", 4, pos = "package:base")
Error in assign("pi", 4, pos = "package:base") :
On Wed, Mar 16, 2011 at 10:54 AM, Allan Engelhardt wrote:
>
>
> On 16/03/11 13:04, Michael Friendly wrote:
>>
>> On 3/15/2011 2:23 PM, Uwe Ligges wrote:
>>>
>>>
>>> On 15.03.2011 15:53, xiagao1982 wrote:
Hi, all,
Does R have a "const object" concept like which is in C++ languag
On 16/03/11 13:04, Michael Friendly wrote:
On 3/15/2011 2:23 PM, Uwe Ligges wrote:
On 15.03.2011 15:53, xiagao1982 wrote:
Hi, all,
Does R have a "const object" concept like which is in C++ language? I
want to set some data frames as constant to avoid being modified
unintentionally. Thanks!
Michael Friendly wrote:
>
> This is just the flexibility of R. I've just discovered a new class of
> geometries based on
>
> > pi <- 2.3
> ?Constants
>
This is a must-fortune.
Dieter
--
View this message in context:
http://r.789695.n4.nabble.com/Does-R-have-a-const-object-tp3356972p3381
On 3/15/2011 2:23 PM, Uwe Ligges wrote:
On 15.03.2011 15:53, xiagao1982 wrote:
Hi, all,
Does R have a "const object" concept like which is in C++ language? I
want to set some data frames as constant to avoid being modified
unintentionally. Thanks!
Although there is almost never a "No" in R
y in a
>> subroutine call.
>>
>> -Original Message-
>> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
>> Behalf Of Uwe Ligges
>> Sent: Tuesday, March 15, 2011 2:23 PM
>> To: xiagao1982
>> Cc: r-help
>> Subject:
mailto:r-help-boun...@r-project.org] On
> Behalf Of Uwe Ligges
> Sent: Tuesday, March 15, 2011 2:23 PM
> To: xiagao1982
> Cc: r-help
> Subject: Re: [R] Does R have a "const object"?
>
>
>
> On 15.03.2011 15:53, xiagao1982 wrote:
>> Hi, all,
>>
>&
igges
Sent: Tuesday, March 15, 2011 2:23 PM
To: xiagao1982
Cc: r-help
Subject: Re: [R] Does R have a "const object"?
On 15.03.2011 15:53, xiagao1982 wrote:
> Hi, all,
>
> Does R have a "const object" concept like which is in C++ language? I want to
> set some d
On 15/03/2011 2:35 PM, Martin Morgan wrote:
On 03/15/2011 11:34 AM, Duncan Murdoch wrote:
> On 15/03/2011 2:23 PM, Uwe Ligges wrote:
>>
>> On 15.03.2011 15:53, xiagao1982 wrote:
>> > Hi, all,
>> >
>> > Does R have a "const object" concept like which is in C++ language?
>> I want to set so
On 15.03.2011 19:35, Martin Morgan wrote:
On 03/15/2011 11:34 AM, Duncan Murdoch wrote:
On 15/03/2011 2:23 PM, Uwe Ligges wrote:
On 15.03.2011 15:53, xiagao1982 wrote:
> Hi, all,
>
> Does R have a "const object" concept like which is in C++ language?
I want to set some data frames as constan
On Tue, Mar 15, 2011 at 10:53 AM, xiagao1982 wrote:
> Hi, all,
>
> Does R have a "const object" concept like which is in C++ language? I want to
> set some data frames as constant to avoid being modified unintentionally.
> Thanks!
>
>
LockBinding will prevent a variable from being modified (but
On 03/15/2011 11:34 AM, Duncan Murdoch wrote:
On 15/03/2011 2:23 PM, Uwe Ligges wrote:
On 15.03.2011 15:53, xiagao1982 wrote:
> Hi, all,
>
> Does R have a "const object" concept like which is in C++ language?
I want to set some data frames as constant to avoid being modified
unintentionally. Th
On 15/03/2011 2:23 PM, Uwe Ligges wrote:
On 15.03.2011 15:53, xiagao1982 wrote:
> Hi, all,
>
> Does R have a "const object" concept like which is in C++ language? I want
to set some data frames as constant to avoid being modified unintentionally. Thanks!
Although there is almost never a "No
On 15.03.2011 15:53, xiagao1982 wrote:
Hi, all,
Does R have a "const object" concept like which is in C++ language? I want to
set some data frames as constant to avoid being modified unintentionally. Thanks!
Although there is almost never a "No" in R, the best short answer is: "No".
Best,
Hi, all,
Does R have a "const object" concept like which is in C++ language? I want to
set some data frames as constant to avoid being modified unintentionally.
Thanks!
xiagao1982
2011-03-15
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