search for: ughhhh

On Wed, Aug 23, 2017 at 12:35 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote: > ummm, Ista, it's 2^n. ummm yes ughhhh. My point is, if the number of groups is large, check it before hand. If you can check it without embarrassing yourself in public like I did that's even better. Best, Ista > > Cheers, > Bert > > > Bert Gunter > > "The trouble with having an open mind is that peop...

> On 23 Aug 2017, at 20:51 , Ista Zahn <istazahn at gmail.com> wrote: > > On Wed, Aug 23, 2017 at 12:35 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote: >> ummm, Ista, it's 2^n. > > ummm yes ughhhh. > You didn't really say otherwise: sum(choose(n,0:n)) == 2^n by the binomial expansion of (1+1)^n (but you knew that) This points to a different algorithm where you write 0:(2^n-1) as n-digit binary numbers and chose items corresponding to the 1s. That won't give the combinations sor...

ummm, Ista, it's 2^n. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Wed, Aug 23, 2017 at 8:52 AM, Ista Zahn <istazahn at gmail.com> wrote: > On Wed, Aug 23, 2017 at 11:33 AM, Christofer Bogaso >

...gaard <pdalgd at gmail.com> wrote: > >> On 23 Aug 2017, at 20:51 , Ista Zahn <istazahn at gmail.com> wrote: >> >> On Wed, Aug 23, 2017 at 12:35 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote: >>> ummm, Ista, it's 2^n. >> >> ummm yes ughhhh. >> > > You didn't really say otherwise: sum(choose(n,0:n)) == 2^n by the binomial expansion of (1+1)^n (but you knew that) > > This points to a different algorithm where you write 0:(2^n-1) as n-digit binary numbers and chose items corresponding to the 1s. That won't give...

Hi: I'm in the middle of recoverying from a tactical error copying around an Mac OS X 10.10.5 Time Machine backup (turns out Apple's instructions aren't great...), and I had rsync running for the past 6 hours repairing permissions/acls on 1.5 TB of data (not copying the data), and then it just died in the middle with: .L....og.... 2015-03-11-094807/platinum-bar2/usr/local/mysql

Xen List After planning for a year to move my Xen 3.4 classrooms to XCP I''m now making an effort. With the old system I wrote many lines of bash scripts around the xm command to group and manage my VMs. I used sudo to grant privileges for each student to start, stop, console into, reboot, and wipe their VMs without any interaction from me. Now with XCP I had the hope of moving to the