On 08/08/2014 08:23 AM, Chris Barker wrote:
So my final question is this:
repeated string concatenation is not the "recommended" way to do this -- but nevertheless, cPython has an optimization that makes it fast and efficient, to the point that there is no practical performance reason to prefer appending to a list and calling join()) afterward.
So why not apply a similar optimization to sum() for strings?
That I cannot answer -- I find the current situation with sum highly irritating.