On Sun, Mar 5, 2017 at 8:13 PM, Gábor Csárdi wrote:
> Because the S3 class system is very informal. E.g. if you happen to
> have an `if.whatever` function, that will be automatically a method of
> your generic.
For example:
x <- structure(1:10, class = "test")
t(x)
#>
#> One Sample t-test
#>
#>
On Sat, Mar 4, 2017 at 12:36 PM, Da Zheng wrote:
> In my case, I create a new type of matrices and override matrix
> operations in R for these matrices.
> My goal is to make the system as transparent as possible, which means
> my system should execute the existing R code without modification.
> T
On Sun, Mar 5, 2017 at 2:50 PM, Michael Lawrence
wrote:
>
>
> On Sat, Mar 4, 2017 at 12:36 PM, Da Zheng wrote:
>>
>> In my case, I create a new type of matrices and override matrix
>> operations in R for these matrices.
>> My goal is to make the system as transparent as possible, which means
>> m
I'm looking for a way to get the length of an object 'x' as given by
base data type without dispatching on class. Something analogous to
how .subset()/.subset2(), e.g. a .length() function. I know that I
can do length(unclass(x)), but that will trigger the creation of a new
object unclass(x) whic
Please add me to R bugzilla.
Thanks,
Bradley
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Da,
I've been following this thread and I'm still confused as to exactly what
you want/why you want it.
I'm probably just missing some context here, but, If() doesn't operate on
matrices, generally. Can you give an example of the type of code you want
to have continue to run that requires if oper
Da Zheng would like to override 'if' and 'while' to accept more than
scalar logicals and Martin Maechler would like to change 'if' to
accept only scalar logicals. No one has mentioned '||' and '&&',
which also want scalar logicals.
Perhaps a solution is to have all of these call a new generic
fun
I can't comment for Da, but one example where the ability to make 'if' generic
would have been desirable:
A couple of years ago I wrote S3 classes and methods for 1-byte integers and
logicals stored as raw vectors, in order to handle massive amounts of genetic
data (by the standards of the day)
