search for: get1index

Hi, Hope you are well. I was wondering if there is a function at C level that is equivalent to mtcars$carb or .subset2(mtcars, "carb"). If I have the index of the column then the answer would be VECTOR_ELT(df, asInteger(idx)) but I was wondering if there is a way to do it directly from the name of the column without having to loop over columns names to find the index? Thank you Best

It looks to me like internally .subset2 uses `get1index()`, but this function is declared in Defn.h, which AFAIK is not part of the exported R API. Looking at the code for `get1index()` it looks like it just loops over the (translated) names, so I guess I just do that [0]. [0]: https://github.com/r-devel/r-svn/blob/1ff1d4197495a6ee1e1d88348a03ff841fd...

hi all, I am trying to use named list to hash a bunch of vector by name, for instance: test = list() test$name = c(1,2,3) the problem is that when i try to get the values back by using the name, the matching isn't done in an exact way, so test$na is not NULL. is there a way around this? Why by default all.equal.list doesnt require an exact match? How can I do hashing in R? thanks. ulas.