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 are not required.)
Second, what's the best-practice R idiom for such conditional loading? I.e.
I'm looking for R's equivalent of Python's
>>> try:
... import json
... except ImportError:
... import simplejson as json
Thanks!
kynn
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