Wednesday, October 19, 2011
Thursday, October 13, 2011
Wednesday, October 12, 2011
Interactive Exploration of a Dynamical System
Interactive Exploration of a Dynamical System from Bret Victor on Vimeo.
http://www.vpri.org/html/people/founders.htm
http://worrydream.com/KillMath
http://tele-task.de/archive/video/flash/14029
A user interface for exploring systems of differential equations. Every variable is shown as a plot; every parameter has a knob that can be adjusted in realtime. This ubiquitous visualization and in-context-manipulation helps the user develop a sense for how the parameters of the system influence its behavior.
Part of the Kill Math project: worrydream.com/KillMath
By Bret Victor: worrydream.com
Tuesday, October 11, 2011
Thursday, September 29, 2011
The World According to LINQ
http://queue.acm.org/detail.cfm?id=2024658
RELATED READING
1. C# Query Expression Translation Cheat Sheet; http://bartdesmet.net/blogs/bart/archive/2008/08/30/c-3-0-query-expression-translation-cheat-sheet.aspx
2. Comprehensions with Order by and Group by; http://research.microsoft.com/en-us/um/people/simonpj/papers/list-comp/index.htm
3. Expressions; http://www.cs.cmu.edu/Groups/AI/html/r4rs/r4rs_6.html#SEC28
4. Google Chart API; http://code.google.com/apis/chart/image/
5. Hadoop; http://hadoop.apache.org/
6.JavaScript;
https://developer.mozilla.org/en/JavaScript/Guide/Predefined_Core_Objects#Array_comprehensions
https://developer.mozilla.org/en/JavaScript/Guide/Predefined_Core_Objects#Array_comprehensions
8. LINQ to HPC;
http://blogs.technet.com/b/windowshpc/archive/2011/07/07/announcing-linq-to-hpc-beta-2.aspx
http://blogs.technet.com/b/windowshpc/archive/2011/07/07/announcing-linq-to-hpc-beta-2.aspx
10. Parallel Programming with .NET; http://blogs.msdn.com/b/pfxteam/archive/2010/04/04/9990343.aspx
11. Python; http://www.python.org/dev/peps/pep-0289/
12. Rx (Reactive Extensions); http://msdn.microsoft.com/en-us/data/gg577609
13. Scala; http://www.scala-lang.org/node/111
14. Xamarin; http://xamarin.com/
Friday, September 9, 2011
MemoryImage
From: http://martinfowler.com/bliki/MemoryImage.html
When people start an enterprise application, one of the earliest questions is "how do we talk to the database". These days they may ask a slightly different question "what kind of database should we use - relational or one of these NOSQL databases?". But there's another question to consider: "should we use a database at all?"
One of the defining characteristics of enterprise applications is the need to store long term data, which naturally leads people to reach for a database. After all persisting data is one of the main things databases do. Using a memory image is a different route to persistence that doesn't involve a database.
The key element to a memory image is using event sourcing, which essentially means that every change to the application's state is captured in an event which is logged into a persistent store. Furthermore it means that you can rebuild the full application state by replaying these events. The events are then the primary persistence mechanism.
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