Re: [Rd] conditional dependencies & loading

2009-06-13 Thread Duncan Murdoch
Kynn Jones wrote: Hi! I'm working on a package that must convert data to and from JSON. For this, it can use either the rjson package, or preferably, the faster RJSONIO package. I have two related questions about this. First, how can I specify that the package depends on *either* RJSONIO *or*

[Rd] conditional dependencies & loading

2009-06-13 Thread Kynn Jones
Hi! I'm working on a package that must convert data to and from JSON. For this, it can use either the rjson package, or preferably, the faster RJSONIO package. I have two related questions about this. First, how can I specify that the package depends on *either* RJSONIO *or* rjson? (I.e. both