Why can’t Double be implicitly cast to Decimal

by

If you convert from double to decimal, you can lose information – the number may be completely out of range, as the range of a double is much larger than the range of a decimal.

If you convert from decimal to double, you can lose information – for example, 0.1 is exactly representable in decimal but not in double, and decimal actually uses a lot more bits for precision than double does.

Implicit conversions shouldn’t lose information (the conversion from long to double might, but that’s a different argument). If you’re going to lose information, you should have to tell the compiler that you’re aware of that, via an explicit cast.

That’s why there aren’t implicit conversions either way.

More Related Contents:

  1. String was not recognized as a valid DateTime ” format dd/MM/yyyy”
  2. Error on if statement – cannot implicitly convert type to ‘bool’
  3. How to cast Object to its actual type?
  4. Casting vs using the ‘as’ keyword in the CLR
  5. Integer summing blues, short += short problem
  6. How To Change DataType of a DataColumn in a DataTable?
  7. Generics in C#, using type of a variable as parameter [duplicate]
  8. What is cool about generics, why use them?
  9. What is the best data type to use for money in C#?
  10. Shorter syntax for casting from a List to a List?
  11. Why do these division equations result in zero?
  12. C# use System.Type as Generic parameter
  13. Why does “int[] is uint[] == true” in C#
  14. covariance in c#
  15. How do I provide custom cast support for my class?
  16. convert double to int
  17. How can I get the data type of a variable in C#?
  18. Cast LINQ result to ObservableCollection
  19. .NET : How do you get the Type of a null object?
  20. Casting vs Converting an object toString, when object really is a string
  21. What are the differences between value types and reference types in C#? [duplicate]
  22. cast object with a Type variable
  23. Why can’t I cast from a List to List?
  24. What is the difference between casting and conversion? [duplicate]
  25. Immutable type and property in C#
  26. C# – Issues with boxing / unboxing / typecasting ints. I don’t understand
  27. Cast IList to List
  28. PostgreSQL and C# Datatypes
  29. C# dynamic type gotcha
  30. What is the “base class” for numeric value types?

Leave a Comment