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

default keyword is useful when you do not know exact type and it works not only for structs, for example in generics:

T FirstOrDefault(IEnumerable source)
{
    if (...source is empty...) return default(T);
}

This will return null for reference types, default value for primitive types(0 for numbers, false for bool), defaultly inialized structure, etc ...

When type is known at compile-time it makes no sense to use default, you can use new Foo() instead