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Using Static Constructor (Jon Skeet Brainteaser)

As a relative newbie I try to read as much as I can about a particular subject and test/write as much code as I can. I was looking at one of Jons Brainteasers (question #2) and my output was different than the answer. Which makes brings me here to ask if something has changed in recent versions and to see what output others are getting from this code.

The question is, "What will be displayed, why, and how confident are you?"

using System;

class Foo
{
    static Foo()
    {
        Console.WriteLine ("Foo");
    }
}

class Bar
{
    static int i = Init();

    static int Init()
    {
        Console.WriteLine("Bar");
        return 0;
    }
}

class Test
{
    static void Main()
    {
        Foo f = new Foo();
        Bar b = new Bar();
    }
}

What, if anything, would cause us to get two different answers?

like image 450
Leroy Jenkins Avatar asked Oct 29 '09 17:10

Leroy Jenkins


1 Answers

Now try it in release mode, outside of the debugger ;-p

I get different results with/without a debugger. The debugger upsets a lot of subtle nuances / optimisations, so I can only guess this is one of those times where the debugger matters. Which makes it even harder to debug ;-p

like image 69
Marc Gravell Avatar answered Oct 22 '22 21:10

Marc Gravell