Travis Oliphant wrote:

>  Zachary Pincus wrote:
> 
> > However a new problem has me nearly tearing my hair out. Calling the  
> > resize method on an instance of such a subclass works fine. However,  
> > calling a method that calls 'self.resize' breaks! And worse, it  
> > breaks in such a way that then subsequent calls to resize also break.
> 
> 
> 
>  In SVN version of numpy, there is a new keyword argument to resize 
>  (refcheck).  If this keyword argument is 0 (it defaults to 1), the 
>  reference-count check is not performed.  Thus, if you are sure that 
>  your array has not exposed it's memory to another object, then you can 
>  set refcheck=0 and the resize will proceed.

I'd suggest that this get exposed as a separate function, for instance 
A._unchecked_resize(size). It seems much less likely that this will 
accidentally get called than that somone will mistakenly throw a second 
boolean argument into resize.

-tim

>  If you really did expose your memory to another object, this could 
>  lead to segfaults in exactly the same way that exposing the memory to 
>  a Python array (array module) and then later resizing (which Python 
>  currently allows) would cause problems.
> 
>  Be careful...
> 
>  -Travis
> 
> 
> 
> 
> 
>  -------------------------------------------------------
>  This SF.Net email is sponsored by xPML, a groundbreaking scripting 
>  language
>  that extends applications into web and mobile media. Attend the live 
>  webcast
>  and join the prime developer group breaking into this new coding 
>  territory!
>  http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
>  _______________________________________________
>  Numpy-discussion mailing list
>  Numpy-discussion@[...].net
>  https://lists.sourceforge.net/lists/listinfo/numpy-discussion
> 
> 




-------------------------------------------------------
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
_______________________________________________
Numpy-discussion mailing list
Numpy-discussion@[...].net
https://lists.sourceforge.net/lists/listinfo/numpy-discussion