James Miles' AI Engineering Adventures

My AI Hacked Its Reward System — AI Engineering Adventures

Sun, 19 Apr 2026 00:00:00 GMT

An experiment in building a C compiler with Claude. Things started swimmingly — and then the AI quietly started gaming its own reward signal.

The Y-Axis & Why I Still Have a Job — AI Engineering Adventures

Fri, 17 Apr 2026 00:00:00 GMT

Unless there is another step-change in AI capability, the y-axis — how we measure value — will define the role of the software engineer going forward.

Announcing WSL Doom! — AI Engineering Adventures

Sat, 11 Apr 2026 00:00:00 GMT

Have you ever wanted to play Doom in the Windows Subsystem for Linux? Well now you can! WSL Doom is a direct fork of Linux Doom with 64-bit portability fixes and TrueColor X11 support.

Can an LLM Drive a Car? — AI Engineering Adventures

Sat, 11 Apr 2026 00:00:00 GMT

I created a slalom driving simulator to find out whether an LLM can drive a car using a computer-use loop. The results were entertaining.

Infinite Owls — AI Engineering Adventures

Mon, 30 Mar 2026 00:00:00 GMT

LLM-based software testing using a computer-use loop. If we've automated software programming, how do we keep up with verifying that the software actually does what it's supposed to?

An AI Wrote a C Compiler — AI Engineering Adventures

Sun, 29 Mar 2026 00:00:00 GMT

We've all read the news that an LLM autonomously wrote a C compiler. But is that impressive? How hard was it? I thought I'd find out.

Hello, World!

Fri, 27 Mar 2026 00:00:00 GMT

Welcome to James Miles' AI Engineering Adventures — a blog about building software with AI assistants, one experiment at a time.

From the Archives: Enumerate This!

Thu, 26 Mar 2026 00:00:00 GMT

The articles below were migrated from Enumerate This!, my original C# and Reactive Extensions blog (2010-2016).

New Linq2Azure Release

Wed, 20 Apr 2016 00:00:00 GMT

We released a new version of Linq2Azure this week, allowing management of SQL Database Geo-Replicas.

YOW! West 2015

Thu, 22 Jan 2015 00:00:00 GMT

If anyone is interested in presenting at YOW! West this year, the submission page is now online.

LightBlue: An alternative to the Azure Emulator

Thu, 21 Aug 2014 00:00:00 GMT

LightBlue is a development framework that abstracts our dependency on the Azure platform, providing a light-weight hosting mechanism for worker and web roles.

Solving Puzzles in C#: Poker Hands

Wed, 13 Aug 2014 00:00:00 GMT

A brute force C# and LINQ solution to computing poker hands from a standard 52-card deck.

Record Types & Pattern-Matching Coming in C# 6?

Mon, 11 Aug 2014 00:00:00 GMT

A look at the draft specification for Records and Pattern-Matching in C#, borrowed from F# and Haskell.

Solving Puzzles with C#: Coins in a Bag

Tue, 05 Aug 2014 00:00:00 GMT

Solving a probability puzzle about biased coins using C# and LINQ in LINQPad.

Linq2Azure 1.1.0.0 released!

Mon, 28 Jul 2014 00:00:00 GMT

Linq2Azure 1.1.0.0 has been released.

Linq2Azure 1.0.0.7 released!

Thu, 18 Jul 2013 00:00:00 GMT

Linq2Azure 1.0.0.7 has been released.

Linq2Azure 1.0.0.1 – LINQPad driver update!

Wed, 12 Jun 2013 00:00:00 GMT

This update contains a bug fix for configuration serialization in the Linq2Azure LINQPad driver.

Linq2Azure – NuGet Package Released!

Wed, 12 Jun 2013 00:00:00 GMT

We've just released the Linq2Azure API to the NuGet Gallery for automation in applications and deployment scripts.

Linq2Azure 1.0.0.0 – LINQPad driver released!

Tue, 11 Jun 2013 00:00:00 GMT

Linq2Azure – What is it?

Fri, 07 Jun 2013 00:00:00 GMT

Asynchronous Commands in Metro, WPF & Silverlight

Thu, 14 Jun 2012 00:00:00 GMT

I've seen quite a few examples demonstrating the new async/await language features (C# 5 & VB next) with button click events;

Hosting your own poker tournament with LINQPad & Reactive Extensions

Sat, 24 Mar 2012 00:00:00 GMT

Playing poker next Saturday night & want to impress your friends with your programming skills?

Rxx 1.3 Released (Rx Contribution Project)

Sat, 10 Mar 2012 00:00:00 GMT

See; http://rxx.codeplex.com/

Reactive Extensions 2.0 Beta: Portable Libraries

Thu, 08 Mar 2012 00:00:00 GMT

Further to my last post about Rx 2.0 assemblies.

Reactive Extensions 2.0 Beta

Wed, 07 Mar 2012 00:00:00 GMT

Rx 2.0 is coming!

Reactive Extensions 2.0 Beta: Assembly References

Wed, 07 Mar 2012 00:00:00 GMT

Before you jump into Rx 2.0 Beta you should know about some of the changes to the hierarchy of assemblies.

Rx – Awaiting events & observables in C# 5

Fri, 17 Feb 2012 00:00:00 GMT

So everyone is now using C# 5 to write asynchronous methods to await tasks right 😉

Pop Quiz: Asynchronous Methods & Contract Errors

Mon, 13 Feb 2012 00:00:00 GMT

This is for people wanting to expand their asynchronous brains!

Reactive Extensions utilizing 64 cores

Tue, 07 Feb 2012 00:00:00 GMT

Saw this on Facebook… welcome to the future;

Hostile to friendly type names

Tue, 10 Jan 2012 00:00:00 GMT

Have you ever written some code that dumps type names using reflection and run into annoyances like this?

Structs that implement IEnumerator

Wed, 30 Nov 2011 00:00:00 GMT

OK. Lets just revise the query we had in the previous post. I’m going to change it so that is finds enumerators that are also value types;

Structs that implement IDisposable

Tue, 22 Nov 2011 00:00:00 GMT

A few weeks ago some friends and I were at the pub discussing value types that implement IDisposable. Consider the IObservable interface.

More Reactive Extensions Performance Improvements

Mon, 21 Nov 2011 00:00:00 GMT

I blogged about performance when Rx was officially released a few months ago.

Reactive Extensions Extensions 1.2

Tue, 15 Nov 2011 00:00:00 GMT

Full Release Notes Here!

Observable.Generate Pop Quiz

Wed, 26 Oct 2011 00:00:00 GMT

What would be the output of the following program;

Asus U36SD notebook running Windows 8 developer preview

Sat, 22 Oct 2011 00:00:00 GMT

I’ve just setup a new laptop running Windows 8 & Visual Studio 11 developer preview.

Financial Charts & Reactive Extensions

Tue, 26 Jul 2011 00:00:00 GMT

The price of a financial instrument is not a fixed value. It is something that changes over time, driven by market forces. It’s quite common to view this as a chart that is updated as the price cha...

New Rxx Release (It’s a big one!)

Thu, 30 Jun 2011 00:00:00 GMT

We couldn’t let Rx go live without an Rxx refresh and boy is it a big one! Dave Sexton & I are proud to announce Rxx 1.1. Firstly let me congratulate Dave. This is a major milestone for us and he h...

Nirvana 6 is out – now with Reactive Extensions

Wed, 29 Jun 2011 00:00:00 GMT

my-Channels Nirvana 6 has just been released:

Reactive Extensions: It’s Official & Interactive Extensions Returns!

Wed, 29 Jun 2011 00:00:00 GMT

Yay! Version 1.0 of Reactive Extensions has just been officially released!

Rx Official Release (more…)

Wed, 29 Jun 2011 00:00:00 GMT

Bunch of new videos and workshops.

Rx Performance Improvements

Wed, 29 Jun 2011 00:00:00 GMT

I think being a technology that enables us to easily write multithreaded, concurrent applications, a question often asked is;

Reactive Extensions – Extensions (Rxx)

Sun, 29 May 2011 00:00:00 GMT

Finding a game of Doom with Rx

Fri, 13 May 2011 00:00:00 GMT

Thanks to everyone for coming to our Rx presentation last night and thanks to Mitch for running the most isolated (in terms of distance) .NET community in the world! Towards the end of the presenta...

Rx Presentation – Perth Western Australia

Mon, 09 May 2011 00:00:00 GMT

Sorry for the lack of blog action. Over the past few weeks I’ve left London behind, been working in Hong Kong, and I’m currently holidaying in Australia.

Marble Diagram for MergeSubject<T>

Sat, 26 Mar 2011 00:00:00 GMT

Here is a marble diagram for my last post; Modelling Market Data Services in Rx with MergeSubject

Modelling Market Data Services in Rx with MergeSubject<T>

Sat, 26 Mar 2011 00:00:00 GMT

Many banking middleware solutions allow a consumer (either another service in the bank or perhaps an external 3rd party) to subscribe to information about a financial instrument. There are numerous...

Modelling Market Data Services in Rx with Scan + Replay

Sat, 26 Mar 2011 00:00:00 GMT

In my last post I defined a new type of subject that is useful for modelling snapshot/update style Publish/Subscribe communications. An alternative to building your own subject is to create an enve...

PEX 4 FUN

Thu, 17 Mar 2011 00:00:00 GMT

Do you like coding & games? Check out PEX4FUN

Creating web forms with LINQ

Mon, 14 Mar 2011 00:00:00 GMT

http://tomasp.net/blog/formlets-in-linq.aspx – Love your work Tomas!

Nirvana .NET : Data Groups & Rx Clients

Mon, 14 Mar 2011 00:00:00 GMT

See my latest post on the my-Channels blog – Nirvana .NET : Data Groups & Rx Clients

Introducing MyChannels.Nirvana

Thu, 10 Mar 2011 00:00:00 GMT

Over the past three Months I’ve been working closely with the guys at my-Channels on a new .NET API for Nirvana. There was a general consensus that, being a Java port, the existing API was not a fr...

Nirvana 6 now supports Reactive Extensions!

Wed, 09 Mar 2011 00:00:00 GMT

my-Channels have just shipped an “early access release” of Nirvana 6.

Not bad… for a human

Sat, 19 Feb 2011 00:00:00 GMT

Just replaced the HDD in my Alienware M15x with a 256 GB Crucial C300.

Rx Schedulers – Reverse Trampoline

Fri, 11 Feb 2011 00:00:00 GMT

Recently I've been playing around with some *crazy* IScheduler implementations. I'm going to do a series of posts outlining some of my ideas. I've not had time to test or meditate on some of these ...

Does my cluster have quorum

Wed, 02 Feb 2011 00:00:00 GMT

I’m finally returning to my blog after a 2 month hiatus. In a previous series of posts, I was looking into various heart beating patterns in Rx. I generally don’t like “multi part blog series” as t...

C# 5.0 & Rx Schedulers

Wed, 03 Nov 2010 00:00:00 GMT

It’s been a pretty exciting week in the C# world. I initially had mixed feelings.

Monitoring cluster nodes in Rx

Fri, 22 Oct 2010 00:00:00 GMT

Ok. So we’ve now defined an observable query that tells us the connectivity of a heart beat / keep alive stream, based on some timeout interval.

Refining the heat beat timeout

Thu, 21 Oct 2010 00:00:00 GMT

I’ve been playing around with different ways of expressing the timeout described in my last post. To refresh your memory, I originally defined it like this;

Heart beats, keep alives & Rx

Tue, 19 Oct 2010 00:00:00 GMT

This one has come up 3 or 4 times this year, so I thought it was about time I blogged about it.

Qbservable Provider for WMI Events (LINQ to WQL)

Wed, 15 Sep 2010 00:00:00 GMT

Bart De Smet has just released… check it out here

Observable Open-high-low-close (OHLC) time frame candles

Sun, 29 Aug 2010 00:00:00 GMT

Wikipedia – “An open-high-low-close chart (also OHLC chart, or simply bar chart) is a type of chart typically used to illustrate movements in the price of a financial instrument over time....

Latch design pattern in Rx

Fri, 27 Aug 2010 00:00:00 GMT

I just ran into some blog posts about the “latch design pattern”.

Latch design pattern in Rx – more….

Fri, 27 Aug 2010 00:00:00 GMT

My original example isn't quite true to the pattern. Here is an updated version.

Empty try block in auto-generated iterator block state machines

Sun, 06 Jun 2010 00:00:00 GMT

I’m sure this has already been pointed out, but I couldn’t find it anywhere.

New domain name!

Thu, 03 Jun 2010 00:00:00 GMT

This blog is now on http://enumeratethis.com/

Bad Memories – Episode 2 (exceptions with a vengeance)

Wed, 26 May 2010 00:00:00 GMT

Refresher…

Bad Memories – Episode 1

Sat, 22 May 2010 00:00:00 GMT

I’ve discussed memoization a few times. Here is the implementation I used last time.

Filtering by information in previous elements

Thu, 20 May 2010 00:00:00 GMT

I’ve been off work sick for the last 2 days so I thought I’d catch up on some blogging. It’s been a couple of weeks as I’ve been busy reading the Haskell language specification. There is obviously ...

Lazy<T> verses Memoize()

Wed, 28 Apr 2010 00:00:00 GMT

When we have a long running operation, a common optimisation is to cache the result and reuse it in subsequent requests. Given the ongoing shift to multithreaded applications it is important that t...

Function as Enumerable

Tue, 27 Apr 2010 00:00:00 GMT

I’ve found that converting a function into an enumerable (or an observable) can be a neat trick at times. Consider the following.

More ideas for enhanced language support

Thu, 22 Apr 2010 00:00:00 GMT

The Zip operator is useful for combining two or more lists of data, where by the elements are matched based on their index.

Language support for CombineLatest would be nice

Sat, 17 Apr 2010 00:00:00 GMT

CombineLatest is very useful for orchestrating parallel asynchronous/observable requests. For example;

“Warm” observables with Publish().RefCount()

Sat, 17 Apr 2010 00:00:00 GMT

So in the observable extensions class there is a nice little extension method that stands out from the rest. RefCount() is different from all the other kids in the class in that it’s for IConnecta...