any() ans all() certainly deserve to be better known. In the patch I submitted yesterday including the file sage/rings/number_field/number_field_ideal.py there's a whole function, doctest and all, called def is_pari_zero_vector(z): which can be replaced entirely by "not all(z)".
John On 01/02/2008, Nils Bruin <[EMAIL PROTECTED]> wrote: > > I forgot one case. This is weird. Exists seems *faster* than any. That > should never be happening! > > sage: L=[1..10^6] > sage: L[10^6-3]=-1 > sage: %timeit any(a<0 for a in L) > 10 loops, best of 3: 2.47 s per loop > sage: %timeit exists(L, lambda a: a<0) > 10 loops, best of 3: 2.83 s per loop > sage: g=lambda a: a<0 > sage: %timeit any(g(a) for a in L) > 10 loops, best of 3: 1.19 s per loop > sage: %timeit exists(L, g) > 10 loops, best of 3: 1.04 s per loop > > > > > -- John Cremona --~--~---------~--~----~------------~-------~--~----~ 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/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
