From: Brad Wilson <dotnetguy@...>
Date: 2005-06-28T09:57:19+09:00
Subject: Re: I saw the beauty of Ruby Re: 1. Ruby result: 101 seconds , 2. Java result:9.8 seconds, 3. Perl result:62 seconds

On 6/26/05, Florian Gro� <florgro@gmail.com> wrote:
> And what if you Use C# 2 features like generics and Array.Map?

I'm not sure what "Array.Map" is. The Whidbey beta 2 docs didn't show
a method off of Array or Array<> named Map.

Replacing ArrayList with List<int> resulted in identical execution
times for 50,000 items, so I presumed it was a statistically
insignificant sampling (using DateTime.Now is a very low res way of
finding time differences, and anything under 1s is probably suspect
anyway).

I ran 5 million. Non-generic .NET is ~ 50x faster than Ruby (probably
was before too, but we couldn't tell because of the smallish sample
size). Generic .NET ran ~ 1.2x faster than non-generic .NET. All
things considered, that's a decent showing for interpreted/latent
typed vs. JITted/strong typed.

C:\> ruby primes.rb
348513
time taken 197.84 seconds

C:\> primes.exe
348513
Time taken: 00:00:04.0000512

C:\> primes-generic.exe
348513
Time taken: 00:00:03.3125424