gordonhogenson - All Comments

re: F# agents with timeouts

Alexander Shvedov — Fri, 18 Nov 2011 00:18:25 GMT

This line cause memory leak:

let rec loop n = async { do! loop (n+1) }

Tail recursion inside computation expressions should be done with "return!":

let rec loop n = async { return! loop (n+1) }

re: Using F# agents and cancellation tokens to manage background jobs

GordonHogenson1 — Fri, 28 Jan 2011 02:04:12 GMT

I've updated the blog post so that the check for IsCancellationRequested is removed.

re: Using F# agents and cancellation tokens to manage background jobs

GordonHogenson1 — Fri, 28 Jan 2011 02:00:40 GMT

Yes it is true, thanks Joel and Robert. The check for IsCancellationRequested is not necessary in F#. However, it's still necessary to break the Async.Sleep up into short calls, since it wants to finish its full sleep time before checking again for cancellation.

re: Using F# agents and cancellation tokens to manage background jobs

Robert — Thu, 27 Jan 2011 22:47:35 GMT

@Joel - I was going to post the same question. From what I've understood, IsCancellationRequested will be automatically checked at every '!' in an async.

re: Using F# agents and cancellation tokens to manage background jobs

Joel — Thu, 27 Jan 2011 22:34:43 GMT

Isn't it true that F# async workflows handle CancellationTokens relatively automatically? I was under the impression you only needed to manually check the IsCancellationRequested property in C#.

tomasp.net/.../async-csharp-differences.aspx

re: Welcome to Gordon Hogenson's F# Blog

jonathan parker — Wed, 12 Jan 2011 15:25:00 GMT

Gordon, really excited to see some new info up regarding f#...looking forward to more of your take on the language and your experience with it..

re: Welcome to Gordon Hogenson's F# Blog

GordonHogenson1 — Mon, 10 Jan 2011 23:08:33 GMT

Jacek thanks for the idea for what information would be useful. I haven't yet tried out F# on the Mac but you just might get me inspired to try that and report on my findings...

re: Welcome to Gordon Hogenson's F# Blog

Jacek Laskowski — Sun, 09 Jan 2011 12:06:43 GMT

Hi,

I'm very grateful for your current and future installments as a way to learn the F# language. What I usually miss is that there's not enough information to help newbies (like me) to get started and would ask for guidance about how to set up a learning environment, esp. on MacOS (but I'd benefit from a Windows-based one as well). I'm looking forward to reading your next installment. Thanks!

Jacek