Last Release: 1.3-1 (04 Oct 2015)
The primary functions in the package are
The package is extensible, allowing others to
define S4 methods for
for different R classes/types.
Similarly, the fromJSON function allows
the caller to specify a different callback handler
which is invoked each time an element (e.g. number,
string, key, start or end of an array or object) is found
in the JSON content.
This package was motivated by the need to export R objects for use in creating dynamic graphics for the Web via SVG and Flash/FLEX. Since then, JSON has become a prominent format with many uses. Alex Couture-Beil's rjson package is another mechanism in R for reading and writing JSON content. However, that does not use S4/S3 methods and so is not readily extensible, but still useful.