C# struct new StructType() vs default(StructType)

Question

Say I have a struct

public struct Foo
{
    ...
}

Is there any difference between

Foo foo = new Foo();

and <

Answer 1

The language specification (§4.1.2 and §5.2) is your friend. Specifically:

For a variable of a value-type, the default value is the same as the value computed by the value-type’s default constructor (§4.1.2).

(Italics in original.)

Note that this is not the same for reference types.

For a variable of a reference-type, the default value is null.

This is emphatically different than the value produced by a default constructor, if one exists.