A while back I wrote that you really never have to write another delegate again, since any delegate can easily be expressed as an Action or Func. After all what's preferable? This: var work = worker.ProcessTaskWithUser(delegate(Task t, User u) { … Continue reading
Before getting into method slots, here's a quick review of the Promise lambda grammar: lambda: [<signature>] <expression>; signature: (<arg1>, … <argN>[|<return-type>]) arg: [<type>] <argName>[=<init-expression>] expression: <statement> | { <statement1>; … <statementN>; } A lambda can be called with positional arguments … Continue reading
Lambdas in Promise, like other languages, are anonymous functions and first-class values. They act as closures over the scope they are defined in and can capture the free variables in their current lexical scope. Promise uses lambdas for all function … Continue reading
A couple of weeks ago someone posted two links on twitter suggesting the trampolining superiority of Clojure to C#. (Can’t find that tweet anymore, and yes, that tweet was what finally motivated me to migrate my blog so i could … Continue reading
Currently working on a tag query engine and couldn’t find anything all that useful in the published approaches. I want to do arbitrary boolean algebras against a set of tags in a database, which seems to be out of scope … Continue reading
This is definitely an edge case testing scenario, so i don’t know how useful this utility class is in general, but i thought it was kinda fun deferred execution stuff, so why not post it? Here’s my scenario. I’ve built … Continue reading
The last couple of nights I’ve been playing with some Linq to Sql and a whole lot of Linq to Objects and I have to say where coming up with complex Regular Expressions used to be one of my favorite … Continue reading
This is closely related to my last post on deferred execution gotchas and its basically more “if you inline delegated code, you may easily overlook scope side-effects”. This time it’s about dealing with foreach and using the local each item … Continue reading
I recently wrote about Action & Func, which along with Lambda expression let you do easy inline callbacks like this: Utility.ActionDownloader.Download( Configuration.GetAssetUri(dto.Url), (Downloader d) => { FloatContainer c = (FloatContainer)XamlReader.Load(d.ResponseText); c.Initialize(dto); }); i.e. I can call a downloader and inline … Continue reading
With lambda expressions in C#, the Func generic delegate and it's variations have been getting a lot of attention. So naturally, you might think that the lambda syntax is just a shortcut for creating anonymous delegates, whether they return values … Continue reading