You could use the Description attribute, as Yuriy suggested. The following extension method makes it easy to get the description for a given value of the enum: public static string GetDescription(this Enum value) { Type type = value.GetType(); string name = Enum.GetName(type, value); if (name != null) { FieldInfo field = type.GetField(name); if (field != … Read more
If you want an array: SELECT enum_range(NULL::myenum) If you want a separate record for each item in the enum: SELECT unnest(enum_range(NULL::myenum)) Additional Information This solution works as expected even if your enum is not in the default schema. For example, replace myenum with myschema.myenum. The data type of the returned records in the above query … Read more
I wouldn’t say “wasteful” (how much does an extra file cost?), but it is often inconventient. Usually there’s one class that’s most closely associtated with the enum, and I put them in the same file.
Use the valueOf method which is automatically created for each Enum. Verbosity.valueOf(“BRIEF”) == Verbosity.BRIEF For arbitrary values start with: public static Verbosity findByAbbr(String abbr){ for(Verbosity v : values()){ if( v.abbr().equals(abbr)){ return v; } } return null; } Only move on later to Map implementation if your profiler tells you to. I know it’s iterating over … Read more
Is there a problem with this formulation? I don’t see any. Is there a better way? I’d collapse the two statements into one: const Colors = Object.freeze({ RED: Symbol(“red”), BLUE: Symbol(“blue”), GREEN: Symbol(“green”) }); If you don’t like the boilerplate, like the repeated Symbol calls, you can of course also write a helper function makeEnum … Read more
If you are using ES8 For this case only it will work perfectly fine. It will give you value array of the given enum. enum Colors { WHITE = 0, BLACK = 1, BLUE = 3 } const colorValueArray = Object.values(Colors); //[ ‘WHITE’, ‘BLACK’, ‘BLUE’, 0, 1, 3 ] You will get colorValueArray like this … Read more
As of C#6 the best way to get the name of an enum is the new nameof operator: nameof(MyEnum.EnumValue); // Ouputs > “EnumValue” This works at compile time, with the enum being replaced by the string in the compiled result, which in turn means this is the fastest way possible. Any use of enum names … Read more
In C# you can define extension methods on enums, and this makes up for some of the missing functionality. You can define Planet as an enum and also have extension methods equivalent to surfaceGravity() and surfaceWeight(). I have used custom attributes as suggested by Mikhail, but the same could be achieved using a Dictionary. using … Read more
Java enums are not like C or C++ enums, which are really just labels for integers. Java enums are implemented more like classes – and they can even have multiple attributes. public enum Ids { OPEN(100), CLOSE(200); private final int id; Ids(int id) { this.id = id; } public int getValue() { return id; } … Read more
You can write extension methods for enum types: enum Stuff { Thing1, Thing2 } static class StuffMethods { public static String GetString(this Stuff s1) { switch (s1) { case Stuff.Thing1: return “Yeah!”; case Stuff.Thing2: return “Okay!”; default: return “What?!”; } } } class Program { static void Main(string[] args) { Stuff thing = Stuff.Thing1; String … Read more