Displaying 2 results from an estimated 2 matches for "column_list".
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2010 Feb 17
3
Extending data frame with longer columns
Hi,
I am a beginner in R and have only read a few chapters in the R book,
I was not able to find a solution for this simple problem.
I have an empty data frame:
a=data.frame(name="test")
which I would like to extend in a for-loop (with data extracted from a
database). Ideally I would like to extend the data frame like this:
a["new_1"] = 1:10
a["new_1"] = 1:12
2006 May 18
5
Overriding default DELETE behavior with logical deletes
Hello!
I am trying to figure out how to implement *logical deletes* instead of
physical deletes using ActiveRecord. Basically, in many applications
that deal with E-Commerce, you really can''t physically delete almost
anything, because records must be kept for auditing and customer service
tracking purposes.
In the past, I''ve implemented logical deletes as follows:
1.