On Sat, Sep 5, 2009 at 2:43 PM, Alan K. Stebbens<[email protected]> wrote: > Many other computer languages deal with non-data just fine, some old, > some new: > > SQL 92: NULL > Ruby: nil > Python: None > Objective C: nil
With its nulls, though, basic rules of logic do not hold in SQL. > The nice thing about Ruby's OO methodology is that if you want to > extend a particular operator onto nil, you can: What happens when two different classes need different behavior from the same operator on nil? -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
