// Q. can you propose alternatives to the parsms idiom
// for setting error messages?
//params enables methods to receive variable numbers of parameters/arguments....0 to infinity # of Parameters
//public static EnResult<T> Failure(T data, string[] errors) // without param
//var result = EnResult<MyNote>.Failure(note, new string[] { "this", "that", "the other thing" }); //can call the method with an array as a parameter
public static EnResult <T> Failure(T data, params string[] errors)
{
var x = new EnResult <T>(data)
{
IsSuccess = false
};
x.Errors.AddRange(errors);
return(x);
}
static void Main(string[] args)
{
var note = new MyNote {
Note = "Foobaz"
};
//Refactoring to replace var with an explicit type
//EnResult<MyNote> result = EnResult<MyNote>.Failure(note, "this", "that", "the other thing");
//Target-typed new-expressions C# 9.0 - an expression gets the type from the context it is used in
//the new expression gets the type from the context,
//which means you don’t have to specify the target-type explicitly to call a constructor.
//EnResult<MyNote> result = new().Failure(note, "this", "that", "the other thing");
//var vs target-typed new expressiong - the C# compiler produces exactly the same Intermediate Language code
var result = EnResult <MyNote> .Failure(note, "this", "that", "the other thing");
Console.WriteLine(result.Errors.Count());
}