3,075 questions
1812
votes
15
answers
726k
views
What does the [Flags] Enum Attribute mean in C#?
From time to time I see an enum like the following:
[Flags]
public enum Options
{
None = 0,
Option1 = 1,
Option2 = 2,
Option3 = 4,
Option4 = 8
}
I don't understand what ...
- 35.8k
1140
votes
43
answers
1.3m
views
How can I represent an 'Enum' in Python?
I'm mainly a C# developer, but I'm currently working on a project in Python.
How can I represent the equivalent of an Enum in Python?
2407
votes
32
answers
1.7m
views
How to get an enum value from a string value in Java
Say I have an enum which is just
public enum Blah {
A, B, C, D
}
and I would like to find the enum value of a string, for example "A" which would be Blah.A. How would it be possible to ...
- 33.9k
600
votes
29
answers
451k
views
Getting attributes of Enum's value
I would like to know if it is possible to get attributes of the enum values and not of the enum itself? For example, suppose I have the following enum:
using System.ComponentModel; // for ...
- 11.3k
1472
votes
31
answers
813k
views
JavaScriptSerializer - JSON serialization of enum as string
I have a class that contains an enum property, and upon serializing the object using JavaScriptSerializer, my json result contains the integer value of the enumeration rather than its string "...
- 60k
481
votes
11
answers
176k
views
How to bind RadioButtons to an enum?
I've got an enum like this:
public enum MyLovelyEnum
{
FirstSelection,
TheOtherSelection,
YetAnotherOne
};
I got a property in my DataContext:
public MyLovelyEnum VeryLovelyEnum { get; ...
- 29.2k
768
votes
9
answers
552k
views
Why is enum class considered safer to use than plain enum?
I heard a few people recommending to use enum classes in C++ because of their type safety.
But what does that really mean?
- 40.3k
612
votes
29
answers
425k
views
What are enums and why are they useful?
While browsing Stack Overflow I came across java singleton instantiation. It references an enum being used in a singleton pattern. I have been learning to write programs for couple of years now, and ...
- 26.9k
179
votes
7
answers
306k
views
What is the size of an enum in C?
I'm creating a set of enum values, but I need each enum value to be 64 bits wide. If I recall correctly, an enum is generally the same size as an int; but I thought I read somewhere that (at least in ...
- 414k
99
votes
5
answers
101k
views
Generic type to get enum keys as union string in typescript?
Consider the following typescript enum:
enum MyEnum { A, B, C };
If I want another type that is the unioned strings of the keys of that enum, I can do the following:
type MyEnumKeysAsStrings = keyof ...
- 3,527
504
votes
5
answers
775k
views
How to get C# Enum description from value? [duplicate]
I have an enum with Description attributes like this:
public enum MyEnum
{
Name1 = 1,
[Description("Here is another")]
HereIsAnother = 2,
[Description("Last one")]
LastOne = 3
}
I ...
- 6,471
447
votes
29
answers
562k
views
How can I iterate over an enum?
I just noticed that you can not use standard math operators on an enum such as ++ or +=.
So what is the best way to iterate through all of the values in a C++ enum?
- 26.6k
234
votes
6
answers
165k
views
Implementing Singleton with an Enum (in Java)
I have read that it is possible to implement Singleton in Java using an Enum such as:
public enum MySingleton {
INSTANCE;
}
But, how does the above work? Specifically, an Object has to be ...
- 21.5k
101
votes
20
answers
127k
views
Easy way to use variables of enum types as string in C?
Here's what I am trying to do:
typedef enum { ONE, TWO, THREE } Numbers;
I am trying to write a function that would do a switch case similar to the following:
char num_str[10];
int ...
- 7,721
735
votes
45
answers
1.1m
views
How to get names of enum entries?
I would like to iterate a TypeScript enum object and get each enumerated symbol name, for example:
enum myEnum { entry1, entry2 }
for (var entry in myEnum) {
// use entry's name here, e.g., "...
- 9,851
182
votes
7
answers
27k
views
Java Enum definition
I thought I understood Java generics pretty well, but then I came across the following in java.lang.Enum:
class Enum<E extends Enum<E>>
Could someone explain how to interpret this type ...
- 188k
1786
votes
8
answers
1.0m
views
How to loop through all enum values in C#? [duplicate]
public enum Foos
{
A,
B,
C
}
Is there a way to loop through the possible values of Foos?
Basically?
foreach(Foo in Foos)
- 23.3k
2226
votes
15
answers
1.1m
views
Comparing Java enum members: == or equals()?
I know that Java enums are compiled to classes with private constructors and a bunch of public static members. When comparing two members of a given enum, I've always used .equals(), e.g.
public ...
- 361k
134
votes
11
answers
195k
views
How to convert enum names to string in c
Is there a possibility to convert enumerator names to string in C?
- 5,409
222
votes
11
answers
196k
views
Most common C# bitwise operations on enums
For the life of me, I can't remember how to set, delete, toggle or test a bit in a bitfield. Either I'm unsure or I mix them up because I rarely need these. So a "bit-cheat-sheet" would be nice to ...
- 8,105
210
votes
13
answers
82k
views
C# vs Java Enum (for those new to C#)
I've been programming in Java for a while and just got thrown onto a project that's written entirely in C#. I'm trying to come up to speed in C#, and noticed enums used in several places in my new ...
- 22.1k
112
votes
4
answers
104k
views
How to use enum values in f:selectItem(s)
I want to make a selectOneMenu dropdown so I can select a status on my question. Is it possible to make the f:selectItem more flexible considering what happens if the order of the enums changes, and ...
- 49.2k
615
votes
42
answers
334k
views
How to enumerate an enum with String type?
enum Suit: String {
case spades = "♠"
case hearts = "♥"
case diamonds = "♦"
case clubs = "♣"
}
For example, how can I do something like:
for suit in Suit {
// do something with ...
- 8,413
136
votes
15
answers
315k
views
C++: Print out enum value as text
If I have an enum like this:
enum Errors {
ErrorA = 0,
ErrorB,
ErrorC,
};
Then I want to print it out to console:
Errors anError = ErrorA;
std::cout << anError; // 0 will be printed
...
- 9,213
194
votes
18
answers
174k
views
What's the advantage of a Java enum versus a class with public static final fields?
I am very familiar with C# but starting to work more in Java. I expected to learn that enums in Java were basically equivalent to those in C# but apparently this is not the case. Initially I was ...
- 4,560