OK, makes sense. Thanks. Shawn
On Apr 14, 9:38 am, Jeremy Evans <[email protected]> wrote: > On Apr 13, 3:25 pm, Shawn <[email protected]> wrote: > > > Thanks, Jeremy. > > > Why must it clone instead of returning self? A dataset filtered by an > > empty argument need not change at all, so why not just return the same > > dataset? Is this to uphold the expectation that filter will always > > return a new object, so subsequent operations do not affect the > > original? > > Yes: > > ds = Album.dataset > ds = ds.filter(h) # where h can be {} > ds.filter!(:a=>1) > > Because Sequel allows mutable actions on datasets, all dataset methods > that return clones must do so in all cases. They can't clone in some > cases and not others. > > Jeremy -- You received this message because you are subscribed to the Google Groups "sequel-talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sequel-talk?hl=en.
