Support single indexes

[agrueneberg]

Example: bed[1]

[agrueneberg]

I'll probably have to look in the R source code how dispatching of single indexes is done. Testing for missing(j) does not tell me whether it's [i] or [i,].

[agrueneberg]

Found a (fairly obvious) solution: nargs will be 2 if only i is passed, and 3 if both i and j are passed.

[gdlc]

That is right. I am not sure what they do. what about setting NULL as
default for both i and j and then checking is.null() instead of
is.missing()?

On Wed, Jun 10, 2015 at 10:48 AM, Alexander Grüneberg <
notifications@github.com> wrote:

I'll probably have to look in the R source code how dispatching of single
indexes is done. Testing for missing(j) does not tell me whether it's [i]
or [i,].

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Reply to this email directly or view it on GitHub
#7 (comment).

[agrueneberg]

You're right, @gdlc, I just tried it and checking is.null() would have worked, too. [ is a primitive method, and it seems like their dispatch is a lot more relaxed than say S4. I wanted to keep a simple signature, so missing() and nargs() are working pretty well.