On Thu, Jun 26, 2008 at 7:17 PM, Kirill Smelkov <[EMAIL PROTECTED]> wrote: > > On Wed, Jun 25, 2008 at 02:59:53PM +0200, Ondrej Certik wrote: >> >> On Sun, Jun 22, 2008 at 5:39 PM, Riccardo Gori <[EMAIL PROTECTED]> wrote: >> > >> > On Sunday 22 June 2008 12:47:38 physnut wrote: >> >> hello there, i'm only new to this project (and haven't started helping >> >> at all >> >> yet...) but wouldn't it be better to retain both versions and give >> >> them >> >> slightly different names (and explain there are two in docstrings)? I >> >> am >> >> presuming that the version which modifies the matrix in situ is faster >> >> and/or >> >> uses lower memory for lots of large matrices? From a CAS standpoint I >> >> agree >> >> with the convenience of making a new matrix, but I am probably not >> >> alone in >> >> wanting to use symbolic mathematics as part of the internals of my >> >> program >> >> and since I am running a home cluster the more efficient the code, the >> >> smaller >> >> my electricity bill is!! >> >> >> > >> > Hello, >> > I can suggest a solution: >> > we could implement expand (and the other functions as applyfunc, diff, >> > etc...) >> > in that way: >> > >> > def function(self,modint=False): >> > if modint: >> > modify(self) >> > else: >> > return new_modified >> > >> > The version that modify the matrix is 15-20% faster, and uses lot less >> > memory >> > (I don't know how to measure it, with a big matrix and using top I can see >> > 35-40% less memory used, but this is not a good method to measure) >> >> What others think about this? What does Sage/numpy and other CAS systems do? > > I think inplace operations are important, especially for large matrices. > > And also I think 'inplace' keyword is more appropriate for what we'are > try to do: > > def function(self, inplace=False): > ... > > So I'm for 'inplace' :)
Yes, me too. Ondrej --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
