On Fri, Jan 1, 2010 at 9:40 PM, Peng Yu pengyu...@gmail.com wrote:
I'm not complaining that it is not documented.
Yes but you didn't answer my question. When you ask a question on
these (or any mailing lists) you should always say what efforts you've
made to answer the question. I first looked
On Thu, Dec 31, 2009 at 11:27 PM, Peng Yu pengyu...@gmail.com wrote:
I don't see where describes the implementation of '[]'.
For example, if x is a matrix or a data.frame, how the lookup of
'colname1' is x[, 'colname1'] executed. Does R perform a lookup in the
a hash of the colnames? Is the
On Fri, Jan 1, 2010 at 6:52 AM, Barry Rowlingson
b.rowling...@lancaster.ac.uk wrote:
On Thu, Dec 31, 2009 at 11:27 PM, Peng Yu pengyu...@gmail.com wrote:
I don't see where describes the implementation of '[]'.
For example, if x is a matrix or a data.frame, how the lookup of
'colname1' is x[,
On 1/1/10 1:40 PM, Peng Yu wrote:
On Fri, Jan 1, 2010 at 6:52 AM, Barry Rowlingson
b.rowling...@lancaster.ac.uk wrote:
On Thu, Dec 31, 2009 at 11:27 PM, Peng Yu pengyu...@gmail.com wrote:
I don't see where describes the implementation of '[]'.
For example, if x is a matrix or a data.frame,
I don't see where describes the implementation of '[]'.
For example, if x is a matrix or a data.frame, how the lookup of
'colname1' is x[, 'colname1'] executed. Does R perform a lookup in the
a hash of the colnames? Is the reference O(1) or O(n), where n is the
second dim of x?
