[R] overloading "[" and "[<-" using S3 classes

[Gabor Grothendieck]

On Sat, Oct 30, 2010 at 9:03 AM, Mark Heckmann <mark.heckmann at gmx.de> wrote:
> How can I overload the "[" and "[<-" operators using S3 classes?
> Something like '['.{class} did not work or at least I do not know how to define it properly.
>
>
> For S4 it is straightforward:
>
> setMethod("[", signature(x = "myClass", i = "numeric"),
>        function (x, i, j, ..., drop){
>                ... some operations
> })
>
> How to do the same for S3?

Check out some examples by entering this into R:

methods("[") # lists [ methods
`[.data.frame`
stats:::`[.ts`



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