Re: [sage-devel] Re: Mutability

2013-05-02 Thread John Cremona
On 2 May 2013 20:11, kcrisman wrote: > > > On Thursday, May 2, 2013 3:11:26 PM UTC-4, kcrisman wrote: >> >> >>> Or perhaps you were just quoting Monty Python after all and I should >>> myself ire domum. >>> >> >> Yes, I think so. > > > Sorry, that sounded rude - I meant "yes" to the Monty Python,

Re: [sage-devel] Re: Mutability

2013-05-02 Thread kcrisman
On Thursday, May 2, 2013 3:11:26 PM UTC-4, kcrisman wrote: > > > Or perhaps you were just quoting Monty Python after all and I should >> myself ire domum. >> >> > Yes, I think so. > Sorry, that sounded rude - I meant "yes" to the Monty Python, not the ire domum. -- You received this messag

Re: [sage-devel] Re: Mutability

2013-05-02 Thread kcrisman
> Or perhaps you were just quoting Monty Python after all and I should > myself ire domum. > > Yes, I think so. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to

Re: [sage-devel] Re: Mutability

2013-05-02 Thread John Cremona
On 2 May 2013 19:41, leif wrote: > Volker Braun: > >> On Thursday, May 2, 2013 6:42:48 PM UTC+1, Nils Bruin wrote: >> >> Furthermore, to express a requirement the optative >> subjunctive mood is probably more appropriate than a future tense. >> >> >> ROMANES EUNT DOMUS Well it is 41 yea

Re: [sage-devel] Re: Mutability

2013-05-02 Thread Mike Hansen
> > No Latin, definitely not :-) > > @require_mutable / @require_immutable > +1 --Mike -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@goo

Re: [sage-devel] Re: Mutability of echelon form result

2011-01-01 Thread William Stein
On Sat, Jan 1, 2011 at 8:09 PM, Rob Beezer wrote: > A fix is available at   http://trac.sagemath.org/sage_trac/ticket/10543 Good, because this is a major bug! See below for how it could wreak havoc: sage: A = matrix(QQ,2,range(4)) sage: C = A.echelon_form() sage: C[0,0] = 20 sage: A.echelon_for

Re: [sage-devel] Re: Mutability

2010-12-27 Thread Justin C. Walker
On Dec 27, 2010, at 11:25 , Robert Bradshaw wrote: > On Mon, Dec 27, 2010 at 11:14 AM, Justin C. Walker wrote: >> Thanks for the reply. >> >> On Dec 26, 2010, at 03:17 , Volker Braun wrote: >> >>> Python has no "const". You can always manually change the innards of your >>> class. The set_immu

Re: [sage-devel] Re: Mutability

2010-12-27 Thread Robert Bradshaw
On Mon, Dec 27, 2010 at 11:14 AM, Justin C. Walker wrote: > Thanks for the reply. > > On Dec 26, 2010, at 03:17 , Volker Braun wrote: > >> Python has no "const". You can always manually change the innards of your >> class. The set_immutable() is just implemented by hand. > > Tuples are "really" im

Re: [sage-devel] Re: Mutability

2010-12-27 Thread Justin C. Walker
Thanks for the reply. On Dec 26, 2010, at 03:17 , Volker Braun wrote: > Python has no "const". You can always manually change the innards of your > class. The set_immutable() is just implemented by hand. Tuples are "really" immutable, correct? Is this possible because the tuple is an internal