rstudio/shiny — pull request #499 by yihui (2014-06-02 21:17:34+00:00)
Title: Bugfix/456

I wrote a version of `set.seed(NULL)` for R 2.15.x, `reinitializeSeed()`, which should achieve the same goal. The random seed is temporarily removed before generating a random number. Since this is called in `withPrivateSeed()`, the global random seed should not be affected after the call even it was removed internally.