R deleting rows in a dataframe

To remove all rows from a data frame in R, you can use any of the following ways:

> b
   x  y   Result
1  1  1   B
2  1  2   B
3  1  3   C
4  1  4   A
5  1  5   B
6  1  6   A
7  1  7   C
8  1  8   C
9  1  9   B
10 1 10   C
> deleteRowsVec=c(FALSE)
> b[deleteRowsVec,]
[1] x   y   Result
<0 rows> (or 0-length row.names)