To find the answer to this question I put together a very simple test, but before we go into it.. Disclaimer: this test and its result should be taken at face value only, it is intended to illustrate that posting messages to an agent is super lightweight, but in a real world application there will …
F# – How many messages can you post to a F# agent in one second? Read More »
One of the problems with using F#’s Discriminated Unions is that they are not extensible, in that all your union cases must be specified inside one Discriminated Union (abbreviated to DU from this point) type and you can’t inherit from an existing DU type to add additional union cases. In most cases, having to specify …
F# – Extending Discriminated Unions using marker interfaces Read More »
Following my recent webinar with SharpCrafters on how to setup pseudo real-time performance monitoring using Aspect Oriented Programming and Amazon CloudWatch, I’d like to say thanks to the guys for having me, it was a great fun For anyone interested, the source code is available at: http://aop-demo.s3.amazonaws.com/RTPerfMonDemo.zip If you want to run the demo console …
Slides and Source Code for my webinar with PostSharp Read More »
I love using F#’s Record and Discriminated Union types, they work nicely with pattern matching inside your F# code and can often alleviate some of the ceremony involved around creating and using a complex object hierarchy. However, on the odd occasion when you need to serialize them into JSON/XML/Binary format, it might not be immediately …
F# – Serializing F# Record and Discriminated Union types Read More »
I will be doing a webinar with the good folks of PostSharp on the 22nd March to talk about the use of AOP and AWS CloudWatch as a pseudo real-time performance monitoring tool (see high-level overview here). It’s a free webinar, it runs from 22nd March 3PM – 4PM GMT, the registration link is here. …
Note: don’t forget to check out the Benchmarks page to see the latest round up of binary and JSON serializers. Since my last round of benchmarks on binary serializers, there’s a new player in town – MessageShark, which at the time of this writing does not support serialization of fields, but offers comparable speed …
For illustration purposes only, here’s how you can implement the QuickSort algorithm in a few lines of code: Note that I’ve not made the list generic to avoid complications and performance overheads associated with dealing with generics. Even then, my 5-line implementation pales in comparison with the built-in sort function: This just goes to show …
Introduction to Aspect Oriented Programming View more presentations from Yan Cui
This is something I’ve mentioned in my recent AOP talks, and I think it’s worthy of a wider audience as it can be very useful to anyone who’s obsessed with performance as I am. At iwi, we take performance very seriously and are always looking to improve the performance of our applications. In order for …
Pseudo RealTime performance monitoring with AOP and AWS CloudWatch Read More »
C# By default, arithmetic operations and conversions in C# execute in an unchecked context, you can use the checked keyword to switch a block of code to the checked context so that any arithmetic overflow that occurs in that block of code will cause the OverflowException to be thrown: However, the scope of the checked …
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