How do I cast int to enum in C#?

From an int: YourEnum foo = (YourEnum)yourInt; From a string: YourEnum foo = (YourEnum) Enum.Parse(typeof(YourEnum), yourString); // The foo.ToString().Contains(“,”) check is necessary for // enumerations marked with a [Flags] attribute. if (!Enum.IsDefined(typeof(YourEnum), foo) && !foo.ToString().Contains(“,”)) { throw new InvalidOperationException( $”{yourString} is not an underlying value of the YourEnum enumeration.” ); } From a number: YourEnum … Read more

Why don’t Java’s +=, -=, *=, /= compound assignment operators require casting?

As always with these questions, the JLS holds the answer. In this case §15.26.2 Compound Assignment Operators. An extract: A compound assignment expression of the form E1 op= E2 is equivalent to E1 = (T)((E1) op (E2)), where T is the type of E1, except that E1 is evaluated only once. An example cited from §15.26.2 […] the following code is … Read more

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