# Interesting or useful links on Twitter this week relating to .NET and C#

Here are some of the more interesting and useful links I found on Twitter this week:

An ASP.NET View engine based on Smarty

Strongly typed route construction :- http://www.assembla.com/wiki/show/snooze

Amazon's Dynamo - high availability key-value store : http://s3.amazonaws.com/AllThingsDistributed/sosp/amazon-dynamo-sosp2007.pdf

An awesome domain name finding tool :- http://www.nxdom.com/

A good demonstration of LINQ and Parallel Extensions

## Related Stories

### Time Series Data Compression

This new technique to compress the time series data collected by my home automation system seems to be working really well.

Ian Mercer

### Digital Twins are never identical

Digital Twin are an online representation of a real world object, a copy of its properties in the digital world and a way to send updated and commands to it. In effect I've been making them for years but now they have a trendy name.

Ian Mercer

### Why smarthomes are hard

Why automated learning is hard for a smart home. The perils of over-fitting, under-fitting and how the general unpredictable nature of life makes it hard to build a system that learns your behavior.

Ian Mercer

### Collinearity test for sensor data compression

One way to reduce the volume of sensor data is to remove redundant points. In a system with timestamped data recorded on an irregular interval we can achieve this by removing co-linear points.

Ian Mercer

### Event blocks

Home automation systems need to respond to events in the real world. Sometimes it's an analog value, sometimes it's binary, rarely is it clean and not susceptible to problems. Let's discuss some of the ways to convert these inputs into actions.

Ian Mercer

### Logistic function - convert values to probabilities

Another super useful function for handling sensor data and converting to probabilities is the logistic function 1/(1+e^-x). Using this you can easily map values onto a 0.0-1.0 probability range.

Ian Mercer

### ATAN curve for probabilities

In a home automation system we often want to convert a measurement into a probability. The ATAN curve is one of my favorite curves for this as it's easy to map overything onto a 0.0-1.0 range.

Ian Mercer

Several years ago we did a major remodel. I did all of the finish electrical myself and supervised all of the rough-in electrical. I also put in all of the electrical system and water in our barn. I have opinions ...

Ian Mercer

### T-Mobile home internet

I'm testing a T-Mobile Home Internet device as a backup to XFinity and a way to offload half our monthly traffic to avoid the XFinity 1.2TB cap

Ian Mercer

### iBeacon meetup in Seattle - January 2015

My notes on the iBeacon meetup in Seattle held in January 2015

Ian Mercer

### Xamarin Forms Application For Home Automation

Building a Xamarin Forms application to control my home automation system

Ian Mercer

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### Dynamically building 'Or' Expressions in LINQ

How to create a LINQ expression that logically ORs together a set of predicates

Ian Mercer

### VariableWithHistory - making persistence invisible, making history visible

A novel approach to adding history to variables in a programming language

Ian Mercer

### Updated Release of the Abodit State Machine

A hierarchical state machine for .NET

Ian Mercer

### Building a better .NET State Machine

A state machine for .NET that I've released on Nuget

Ian Mercer

### The Internet of Dogs

Connecting our dog into the home automation

Ian Mercer

### A simple state machine in C#

State machines are useful in many contexts but especially for home automation

Ian Mercer

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### Exception: An object with the same key already exists in the ObjectStateManager. The ObjectStateManager cannot track multiple objects with the same key.

Help with this exception

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### Tip: getting the index in a foreeach statement

A tip on using LINQ's Select expression with an index

Ian Mercer

### Future proof your home with a new conduit system?

Running conduit can be expensive but maybe you don't need one to every room

Ian Mercer

### WCF and the SYSTEM account

Namespace reservations and http.sys, my, oh my!

Ian Mercer

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### Mixed mode assembly errors after upgrade to .NET 4 Beta 2

Fixing this error was fairly simple

Ian Mercer

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### The EntityContainer name could not be determined

How to fix the exception "the entitycontainer" name could not be determined

Ian Mercer

### Shortened URLs should be treated like a Codec ...

Expanding URLs would help users decide whether or not to click a link

Ian Mercer

### Tagging File Systems

Isn't it time we stopped knowing which drive our file is on?

Ian Mercer

### A great site for developing and testing regular expressions

Just a link to a site I found useful

Ian Mercer

### WMPnetwk.exe started using 50% of my CPU

Uninstalling Windows Media Player - the end of an era

Ian Mercer

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### Amazon Instance vs Dedicated Server comparison

Some benchmark performance for Amazon vs a dedicated server

Ian Mercer

### System.Data.EntitySqlException

Hints for dealing with this exception

Ian Mercer

### Agile Software Development is Like Sailing

You cannot tack too often when sailing or you get nowhere. Agile is a bit like that.

Ian Mercer

### Exception Handling using Exception.Data

My latest article on CodeProject covers the lesser known Exception.Data property

Ian Mercer

### AntiVirus Software is the Worst Software!

When your anti-virus software starts stealing your personal data, it's time to remove it!

Ian Mercer

### ASP.NET Custom Validation

How to solve a problem encountered with custom validation in ASP.NET

Ian Mercer

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LinqKit came in handy back in 2009

Ian Mercer

### It's all about disk speed

Why disk speed is the most critical aspect for most modern PCs and servers

Ian Mercer

### Cache optimized scanning of pairwise combinations of values

Using space-filling curves to optimize caching

Ian Mercer

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### Preparing for death

A friend died last year, it wasn't unexpected. He left a lot for his friends to cleanup. Maybe these notes can help someone else prepare better.

Ian Mercer