From: Florian Gross <flgr@...>
Date: 2004-11-04T21:28:45+09:00
Subject: Re: SyncEnumerator

Sean Russell wrote:

> I was playing around with the SyncEnumerator from Ruby 1.8, and
> noticed that it was taking a long time to iterate over elements.
> 
> The current implementation may be the "correct", or elegant, way to
> implement it, but it is terribly inefficient.  I rewrote the class,
> and got the following results:
> 
> Construction
> Old: 0.159291
> New: 0.000352
> Starting SyncEnumerator
> ................................................................................
> 26 shold be 26 :: Time: 19.686455
> Starting SyncEnumerator_
> ................................................................................
> 26 shold be 26 :: Time: 0.028817
> 
> The new version is nearly three orders of magnitude faster for
> construction, and is three orders of magnitude faster in execution.
> 
> Is there any reason why I shouldn't submit this as an RCR to replace
> SyncEnumerator?

I wonder how an implementation using .zip with a block would compare? Or 
would that not do the same thing?