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From: Chris Angelico <rosuav@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: The Cost of Dynamism (was Re: Pyhon 2.x or 3.x, which is faster?)
Date: Thu, 24 Mar 2016 11:15:42 +1100
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On Thu, Mar 24, 2016 at 11:12 AM, Random832 <random832@fastmail.com> wrote:
> I guess the question is, what do you _actually_ need the tail string
> for? If you're using it in a loop, to pop further characters from (the
> scenario that would cause it to be copying the string over lots of
> times), wouldn't it make more sense to use a StringIO (or, in the real
> world where your C source code isn't a string, a file) and let that
> class take care of handing out characters when you ask for them?
>
> Like...
>
> fsource = StringIO(psource)
>
> while True:
>     c = fsource.read(1)
>     lxsymbol = disptable[min(ord(c), 256)](c, fsource)

Or... just grab an iterator off the string and call next() on it?

ChrisA