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POC# Primitive types (double, int, etc) and Struct differences
 

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    <p>I am confused with structs. </p> <pre><code>class A { double a { get; set; } MyStruct b { get; set; } void Modify() { a = 1.0; // This compiles. b.c = 2.0; // Assuming c is a double. This gives the known error. } } </code></pre> <p>Now why I am able to set the value of the structure a, and not of the structure's field b ? The answer I read is that I have a copy of b and not b's backing field. By the same logic I must have a copy of a, not a, so how it explains that the a property is changed after the permitted assignement </p> <pre><code>a = 1.0; </code></pre> <p>? Thank you.</p> <p><strong>EDIT :</strong><br> Also in order to still use b inside the A class, "filtered" by the set and get methods and not directly by using the backing field _b, something which could look like this: </p> <pre><code>MyStruct _b; MyStruct b { get { return _b; } set { _b=value; } } </code></pre> <p>and then use the field </p> <pre><code>_b </code></pre> <p>, as correctly stated in the answers, I thinked of a silly method to "wrap" the property in an one dimensional array of size 1.</p> <pre><code>MyStruct[] b { get; set; } </code></pre> <p>kind of wrapping the struct with a class. I dont know the computational cost of this, but I preferred it from using the field directly inside the A class. </p> <p><strong>ANSWERED :</strong> Ok, the confusion in this question comes, when you are <strong>used to interpret properties as fields</strong> in your mind. If you interpret properties the correct way -<strong>as the MsIL does</strong>-, all things settle down. All the answers and comments below, are relevant. (Sorry for the bad English.)</p>
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