On May 13, 2010, at 1:16 PM, thmsfuller...@gmail.com wrote: > Hello All, > > If I refer to a variable 'x', 'x' will be searched in the current > frame or the parent frame, or the parent of the parent frame, etc., > until it is found (or not found at all)? Could you please show me what > code in R source that handles this? Is it in the C code or the R code? >
At R level it is done automatically during evaluation (but you can so something similar using get() function in R). Internally (in C), findVar(symbol, env) in src/main/envir.c does the job by using findVarInFrame3() recursively for parent environments. There is slight exception if you use x() since that does a search with the restriction that x must be a function and thus uses findFun() instead. Cheers, Simon ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
