indic-computing-devel

[Indic-computing-devel] Re: Indic-computing-devel digest, Vol 1 #38 - 8 msgs

[Tapan S. P. <ta...@ya...>]

> A quick profiling of the code indicated that the performance problems
> are due to the string manipulation:
>
> str = str + "abc"
>
> is inefficient in python, because strings are immutable and doing string
> concatenation in a loop creates too many objects. (This is true of Java
> also). The trick is to collect them in a list and do string.join(list).
> Will make the change later today.

Not if you use StringBuffer in Java.  (Not that Im some Java advocate or
anything, sometimes it _is_ painfully slow...)  Is there any similar
mechanism in Python, or maybe this is it?

--Tapan


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Re: [Indic-computing-devel] Re: Indic-computing-devel digest, Vol 1 #38 - 8 msgs

[Arun S. <ar...@sh...>]

On Thu, Mar 14, 2002 at 12:47:58PM +0530, Tapan S. Parikh wrote:
> 
> Not if you use StringBuffer in Java.  (Not that Im some Java advocate or
> anything, sometimes it _is_ painfully slow...)  Is there any similar
> mechanism in Python, or maybe this is it?

StringBuffer can be used in jython, but that's not a part of
the standard python API. I picked up the idiom from here:

http://manatee.mojam.com/~skip/python/fastpython.html#stringcat

Am yet to try it out.

	-Arun