Suggestion: Allow new in C# without giving Type
This is a suggestion I’ve just sent in via Visual Studio’s “Send a frown” feature:
Instead of writing statements like:
List<CultureInfo> result = new List<CultureInfo>();
in C# I’d prefer to be able to write
List<CultureInfo> result = new ();
inside the () one would be able to pass contructor parameters and also they should be able to use
SomeClass v = new (someParam) { someProperty = …, otherProperty = … };
syntax, that is be able to initialize properties of the class
What I mean is that I want to omit the type name after the new, since it is deduced from the type I have given to the new var.
Doing
Type v = new (…){…};
is more general from the alternative of doing
var v = new Type(…){…};
since you would be also able to even do
someCollectionType.Add(new (…){…});
to add a new member to a typed collection
and also would be able to do
SomeMethod(new (…){…})
where the Type would be deduced from the param of the method (obviously if it is not overloaded with more versions with just 1 param)
Update:
In fact, now that I think of it again, the concept of anonymous types in C# could be merged with the suggested one, making the (…) optional if no constructor parameters are to be used (in anonymous types you only give the {…} part with the properties’ initialization).
The compiler would then resort to making a new anonymous type only if it can’t deduce a type from the usage context.
Of course if the (…) part (constructor parameters) are given, it would never try to make an anonymous type if it can’t find a matching type to instantiate with the respective constructor signature to call.
Have uploaded this for voting up at:
George Birbilis @zoomicon 