Difference between the constructors of a struct and class

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When I try to type all this out for a struct/structure without the bits in bold, I am getting squiggly error lines. Why is it that when I add the :this() to the code, the squiggly lines disappear? This error doesn't appear for classes but they will for structs.

 struct Line
    {
        private Point point1 { get; set; }
        private Point point2 { get; set; }

        readonly double Length;
        readonly double Slope;

        public Line(Point p1, Point p2):this()
        {
            point1 = p1;
            point2 = p2;
        }
}

Posted 15-Oct-12 12:45pm

FourCrate

Updated 15-Oct-12 12:54pm

v5

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n.podbielski 15-Oct-12 19:18pm

"I am getting squiggly error lines."

Thats funny way of saying about Intellisense errors notifications.

FourCrate 15-Oct-12 19:23pm

haha I'm strange...

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n.podbielski · Accepted Answer · 2012-10-15T13:17:00

Solution 1

Structures cannot have unitialized members.
Classes can.

Structures also have default constructor added by compiler so when you adding :this() as default constructor call, error with message that struct cannot have
uninitialized members disapper as default constructor will assign default values to members.

When you change to class, as they can have such members, error will also disappear.

Posted 15-Oct-12 13:17pm

n.podbielski

Comments

FourCrate 15-Oct-12 19:36pm

Thanks!

n.podbielski 16-Oct-12 1:09am

No problem