yes, thanks!
On Sun, Mar 31, 2013 at 12:47 AM, Jason Grout <jason-s...@creativetrax.com>wrote: > On 3/30/13 4:09 PM, Gary McConnell wrote: > >> So I understand something of what is going on, could you please tell me >> why the tuple thing is necessary for the "used" set but the vectors are >> necessary for the "bases": ie why can we not use a vector structure for >> "used"? >> > > The bases is just a list of lists of vectors, which doesn't require > immutability. The used variable is a set (since set membership testing is > O(1), but list membership testing is O(n)---a lot slower). A set requires > immutability. > > Does that help? > > > Thanks, > > Jason > > > -- > You received this message because you are subscribed to a topic in the > Google Groups "sage-support" group. > To unsubscribe from this topic, visit https://groups.google.com/d/** > topic/sage-support/**GFJdjFvKCvo/unsubscribe?hl=en<https://groups.google.com/d/topic/sage-support/GFJdjFvKCvo/unsubscribe?hl=en> > . > To unsubscribe from this group and all its topics, send an email to > sage-support+unsubscribe@**googlegroups.com<sage-support%2bunsubscr...@googlegroups.com> > . > To post to this group, send email to sage-support@googlegroups.com. > Visit this group at > http://groups.google.com/**group/sage-support?hl=en<http://groups.google.com/group/sage-support?hl=en> > . > For more options, visit > https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> > . > > > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
