Displaying 2 results from an estimated 2 matches for "row_names_gets".
2012 Aug 28
1
Don't dput() data frames?
/src/main/attrib.c contains this comment in row_names_gets():
/* This should not happen, but if a careless user dput()s a
data frame and sources the result, it will */
which svn blame says Prof Ripley placed there in r39830 with the
commit message "correct the work of dput() on the row names of a data
frame with compact representation.&...
2014 Apr 02
0
special handling of row.names
...@104f088c8 13 INTSXP g0c1 [] (len=2, tl=0) -2147483648,10
TAG: @100823548 01 SYMSXP g1c0 [MARK,LCK,gp=0x4000] "class" (has value)
@104f08838 16 STRSXP g0c1 [] (len=1, tl=0)
@1008a7e60 09 CHARSXP g1c2 [MARK,gp=0x61,ATT] [ASCII] [cached] "data.frame"
This happens in row_names_gets (attrib.c), here:
if(OK_compact) {
/* we hide the length in an impossible integer vector */
PROTECT(val = allocVector(INTSXP, 2));
INTEGER(val)[0] = NA_INTEGER;
INTEGER(val)[1] = n;
ans = installAttrib(vec, R_RowNamesSymbol, val);
UNPROTECT(1);
return ans;
}...