[Mono-list] Class Property Initializer Question...

[Ryan Kirkpatrick]

Ryan Kirkpatrick wrote:
> When I compile and run the following code with Visual Studio, the output 
> is 'Blue/Green' and 'Red/Red'. When I compile and run the same code 
> with Mono (2.4.2.x), the output is 'Blue/Green' and 'Blue/Green'.

Looked at this again with a fresh mind this morning and realized this 
only happens if the initial values set inline with 'new' are the 
variable type's default value. In other words, if I change the below 
code such that 'Red = 3' in the enum, then this problem all goes away!

Therefore, these 'inline initializers' are unable to set a class's 
variable/property to the default value of its data type if the class 
provides a value in its declaration or constructor. This looks like a 
compiler bug to me. :(

> ---------------------PROGRAM.CS-------------------------------------
> 
> using System;
> using System.Collections.Generic;
> 
> namespace ConsoleApplication2 {
>      enum Colors { Red = 0, Green = 1, Blue = 2 };
>      class Screen {
>          public Colors fore = Colors.Blue;
>          public Colors back;
>          public Screen() { back = Colors.Green; }
>      }
> 
>      class Program {
>          static void Main(string[] args) {
>              Screen a = new Screen();
>              Console.WriteLine("{0} / {1}", a.fore, a.back);
>              a = new Screen() { back = Colors.Red, fore = Colors.Red };
>              Console.WriteLine("{0} / {1}", a.fore, a.back);
>          }
>      }
> }
> 
> -----------------------------------------------------------------

-- 
Ryan Kirkpatrick <ryan.kirkpatrick at inovonics.com>, 303-209-7190
Senior Design Engineer
Inovonics Wireless Corporation

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