They are simply showed like this: _______________________ | <<enumeration>> | | DaysOfTheWeek | |_____________________| | Sunday | | Monday | | Tuesday | | … | |_____________________| And then just have an association between that and your class.
the original version of that document was just a bunch of prejudices. it’s been rewritten to only contain facts backed up by actual benchmarks, and it’s updated as the VM is updated. you can find the various benchmarks — plus some of the benchmarks we use to optimize the core libraries — at http://code.google.com/p/dalvik/.
Enum.GetValues() seems to return the values in order, so you can do something like this: // given this enum: public enum Foo { Fizz = 3, Bar = 1, Bang = 2 } // this gets Fizz var lastFoo = Enum.GetValues(typeof(Foo)).Cast<Foo>().Last(); Edit For those not willing to read through the comments: You can also do … Read more
The main difference between name() and toString() is that name() is a final method, so it cannot be overridden. The toString() method returns the same value that name() does by default, but toString() can be overridden by subclasses of Enum. Therefore, if you need the name of the field itself, use name(). If you need … Read more
You delete (drop) enum types like any other type, with DROP TYPE: DROP TYPE admin_level1; Is it possible you’re actually asking about how to remove an individual value from an enum type? If so, you can’t. It’s not supported: Although enum types are primarily intended for static sets of values, there is support for adding … Read more
Type safety and value safety. Guaranteed singleton. Ability to define and override methods. Ability to use values in switch statement case statements without qualification. Built-in sequentialization of values via ordinal(). Serialization by name not by value, which offers a degree of future-proofing. EnumSet and EnumMap classes.
It’s because your enum is not the standard library enum module. You probably have the package enum34 installed. One way check if this is the case is to inspect the property enum.__file__ import enum print(enum.__file__) # standard library location should be something like # /usr/local/lib/python3.6/enum.py Since python 3.6 the enum34 library is no longer compatible … Read more
You can’t see this method in javadoc because it’s added by the compiler. Documented in three places : Enum Types, from The Java Tutorials The compiler automatically adds some special methods when it creates an enum. For example, they have a static values method that returns an array containing all of the values of the … Read more
The idiomatic interface for ‘getting a String’ is to use the CustomStringConvertible interface and access the description getter. Define your enum as: enum Foo : CustomStringConvertible { case Bing case Bang case Boom var description : String { switch self { // Use Internationalization, as appropriate. case .Bing: return “Bing” case .Bang: return “Bang” case … Read more
It really depends on what you want to do with the returned value: If you need to get the exact name used to declare the enum constant, you should use name() as toString may have been overriden If you want to print the enum constant in a user friendly way, you should use toString which … Read more