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POHow to cleverly create an anonymous type from an IEnumerable<T>?
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  1. POHow to cleverly create an anonymous type from an IEnumerable<T>?
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    copied!<p>I would like to use LINQ to solve the following problem, I have the following collection:</p> <pre><code>List&lt;byte&gt; byteList = new List&lt;byte() { 0x01, 0x00, 0x01, 0x02, 0x01, 0x00, 0x3, 0x4, 0x02 }; </code></pre> <p>The data in this example follows the following pattern:</p> <p>byteList[0] = address (1, 2, 3, ... n) </p> <p>byteList[1] = old state, which is basically representative of an enum </p> <p>byteList[2] = new state, same as above</p> <p>I am interfacing with an embedded device and this is how I can view changes in inputs.</p> <p>In order to clean up code and make it easier for a maintenance programmer to follow my logic, I'd like to abstract away some of the nuts and bolts involved and extract each three-byte set of data into an anonymous type to be used within the function to perform some additional processing. I've written a quick implementation, but I'm sure it can be greatly simplified. I'm trying to clean up the code, not muddy the waters! There has to be a simpler way to do the following:</p> <pre><code>List&lt;byte&gt; byteList = new List&lt;byte&gt;() { 0x01, 0x09, 0x01, 0x02, 0x08, 0x02, 0x03, 0x07, 0x03 }; var addresses = byteList .Where((b, i) =&gt; i % 3 == 0) .ToList(); var oldValues = byteList .Where((b, i) =&gt; i % 3 == 1) .ToList(); var newValues = byteList .Where((b, i) =&gt; i % 3 == 2) .ToList(); var completeObjects = addresses .Select((address, index) =&gt; new { Address = address, OldValue = oldValues[index], NewValue = newValues[index] }) .ToList(); foreach (var anonType in completeObjects) { Console.WriteLine("Address: {0}\nOld Value: {1}\nNew Value: {2}\n", anonType.Address, anonType.OldValue, anonType.NewValue); } </code></pre>
 

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