The following implementation in C# using Rx.NET runs in 1min58 in LINQPad on quad core Q6600@2.4ghz:

var listeners =
Enumerable.Range(0, 10000)
.Select(_ => new Subject(Scheduler.TaskPool))
.MemoizeAll();

listeners.Publish(o => o.Zip(o.Skip(1), (l, r) => new { l, r}))
.Run(o => o.l.Subscribe(o.r));

Observable
.Range(0, 10000)
.Delay(TimeSpan.FromMilliseconds(1000))
.Subscribe(listeners.First());

listeners.Last().Last().Dump();

I also have the following F# implementation running in 50s on the same machine (F# interactive):

type Agent = MailboxProcessor

let count = 10000
let now = System.DateTime.Now

Agent.Start (fun inbox ->
async {
while true do
let! msg = inbox.Receive()
if msg = count then
printfn “%A” (System.DateTime.Now – now).TotalMilliseconds })
|> Seq.unfold (fun next ->
let agent = Agent.Start (fun inbox ->
async {
while true do
let! msg = inbox.Receive()
next.Post msg } )
Some (agent, agent))
|> Seq.nth count
|> (fun agent -> for i in 1..count do agent.Post i)

Both code seems to scale pretty well versus the timing I had on my dual core laptop at work (T7400), although I only remember the time for the C#-Rx version at 5min50.

David

I’m building a site for The Nerve Centre, a place in Huddersfield UK, which supports people with neurological conditions. As such your plugin is very useful. :o)

My problem is that it doesn’t appear on the homepage. Is there a way of getting it to appear on every page? Some of our users are visually impaired so it would be great to have this option as soon as they arrive.

Thanks a lot, Andy

Thanks,
Sulekha

This is a great quote thanks to Ferdy for posting it. I have found office politics to be difficult to deal with. And it has become more so with the economy going the way it is.
I found this in another blog and found it extremely beneficial to me; “Software transparency is immediate visibility into the quality and security of all code in development, without disrupting the development process”. I must say that transparency is a great idea but the implementation of it could be rather a kaotic one and dealing with that kaos would make it even more befuddling. How do you not do this though. The client is hard enough to understand and get answers out of, in some cases. Without doing some kind of transparency you might have a useless instance. Creating trancparnecy is a canundrum. Thanks for the post.

i have installed your plug-in on my local WP site.

but it will not work as expected.Please help me to rectify this.

Thanks.

A – to change to 12
A – to change to 14
A – to change to 16

Any idea how I can do this?

Thanks.