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POc# assignment performance with different ways
 

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    <p>everyone,recently i was debugging a program for improve performance.i notice a interest thing about assignment's performance.the below code is my test code.</p> <p>CODE A</p> <pre><code>public class Word{....} public class Chunk { private Word[] _items; private int _size; public Chunk() { _items = new Word[3]; } public void Add(Word word) { _items[_size++] = word; } } </code></pre> <p>main</p> <pre><code> Chunk chunk = new Chunk(); for (int i = 0; i &lt; 3; i++) { chunk.Add(new Word() { });// } </code></pre> <p>CODE B</p> <pre><code>public class Chunk { private Word[] _items; private int _size; public Chunk() { _items = new Word[3]; } public Word[] Words { get { return _items; } } public int Size { get{return _size;} set{_size=value;} } } </code></pre> <p>main</p> <pre><code> Chunk chunk = new Chunk(); for (int i = 0; i &lt; 3; i++) { chunk.Words[i] = new Word() { }; chunk.Size + = 1; } </code></pre> <p>in my test with visual studio'profiling tool,calling the main method 32000 times,that performance shows the CODE B FASTER than the CODE A.why the CODE B faster than the CODE A?who can give me a suggestion? thanks</p> <p>update:sorry,i forgot increase _size code in the CODE B,i have updated my CODE B</p> <p>update: @Shiv Kuma Yes, code A is similar with Code B in the situation of 30000 call times. I tested the 700K file and the code can be called 29000 times or so. Meanwhile, code B is 100 millisecond faster than Code A, and actually Code B is much better during the real segment. Here one more thing I’m wondering is why Code B is faster than Code A even for the same assignment? Anyway, thanks for you reply.</p>
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    1. COHow much difference is there? And can you show us the code you're using to profile? If you're calling Code A and then Code B, try swapping it such that you call Code B and then Code A. Showing us how you're profiling this is important because there are many things that can be wrong in your profiling code.
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      1. USShiv Kumar
    2. COI justed tested this out and there is almost no difference between the two you're talking 1 millisecond (some times and in favor of either of the methods) over 30,000 iterations. Unless you're seeing otherwise, this is a total waste of everyone's time.
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    3. COaccept an answer or leave comment or edit your question on what you are looking for.
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      1. USSanjeevakumar Hiremath
 

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