The process of enumerating values, for example from some collection.
Use enums for enumeration types.
Questions tagged [enumeration]
1894 questions
39
votes
4 answers
enum implementation inside interface - Java
I have a question about putting a Java enum in the interface.
To make it clearer, please see the following code:
public interface Thing{
public enum Number{
one(1), two(2), three(3);
private int value;
private Number(int…
Joey
- 2,732
- 11
- 43
- 63
37
votes
5 answers
Return Type of Java Generic Methods
I wonder why generic methods which return nothing void are (or can be) declared this way:
public static void printArray( E[] inputArray ) {
// Display array elements
for ( E element : inputArray ){
…
user975343
36
votes
5 answers
How to stop enumerateObjectsUsingBlock Swift
How do I stop a block enumeration?
myArray.enumerateObjectsUsingBlock( { object, index, stop in
//how do I stop the enumeration in here??
})
I know in obj-c you do this:
[myArray enumerateObjectsUsingBlock:^(id *myObject,…
random
- 8,568
- 12
- 50
- 85
35
votes
12 answers
Why do people use enums in C++ as constants while they can use const?
Why do people use enums in C++ as constants when they can use const?
Loai Abdelhalim
- 1,901
- 4
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- 28
35
votes
3 answers
Changing objects value in foreach loop?
In one place i am using the list of string in that case the i am able to change the value of the string as code given below,
foreach(string item in itemlist.ToList())
{
item = someValue; //I am able to do this
}
But for object of class i am…
user2553512
35
votes
7 answers
case class copy 'method' with superclass
I want to do something like this:
sealed abstract class Base(val myparam:String)
case class Foo(override val myparam:String) extends Base(myparam)
case class Bar(override val myparam:String) extends Base(myparam)
def getIt( a:Base ) =…
nairbv
- 4,045
- 1
- 24
- 26
33
votes
4 answers
Dictionary enumeration in C#
How do I enumerate a dictionary?
Suppose I use foreach() for dictionay enumeration. I can't update a key/value pair inside foreach(). So I want some other method.
Ravi
- 1,263
- 6
- 17
- 23
32
votes
7 answers
How to get Get a C# Enumeration in Javascript
I have an enum in my C# code and I want to get the same enum in javascript.
Is there any way to do this without hardcoding?
Jishnu A P
- 14,202
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32
votes
7 answers
C++ - enum vs. const vs. #define
At the end of the article here: http://www.learncpp.com/cpp-tutorial/45-enumerated-types/, it mentions the following:
Finally, as with constant variables, enumerated types show up in the debugger, making them more useful than #defined values in this…
Simplicity
- 47,404
- 98
- 256
- 385
32
votes
4 answers
Overriding Scala Enumeration Value
As far as I can tell, Scala has definitions for the Enumeration Value class for Value(Int), Value(String), and Value(Int, String).
Does anyone know of an example for creating a new Value subclass to support a different constructor?
For example, If I…
Ralph
- 31,584
- 38
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- 282
31
votes
5 answers
What is the best way to convert an IEnumerator to a generic IEnumerator?
I am writing a custom ConfigurationElementCollection for a custom ConfigurationHandler in C#.NET 3.5 and I am wanting to expose the IEnumerator as a generic IEnumerator.
What would be the best way to achieve this?
I am currently using the…
zonkflut
- 2,929
- 3
- 22
- 25
31
votes
9 answers
Is there a way to iterate through all enum values?
Possible Duplicate:
C#: How to enumerate an enum?
The subject says all. I want to use that to add the values of an enum in a combobox.
Thanks
vIceBerg
vIceBerg
- 4,197
- 5
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- 53
30
votes
11 answers
Can Swift enums have multiple raw values?
I want to associate two raw values to an enum instance (imagine an enum representing error types, I want Error.Teapot to have an Int type property code with value 418, and a String property set to I'm a teapot.)
Note the difference between raw…
Robert Atkins
- 23,528
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29
votes
11 answers
IEnumerable as return type
Is there a problem with using IEnumerable as a return type?
FxCop complains about returning List (it advises returning Collection instead).
Well, I've always been guided by a rule "accept the least you can, but return the maximum."
From…
Valentin V
- 24,971
- 33
- 103
- 152
29
votes
9 answers
Why can't we change values of a dictionary while enumerating its keys?
class Program
{
static void Main(string[] args)
{
var dictionary = new Dictionary()
{
{"1", 1}, {"2", 2}, {"3", 3}
};
foreach (var s in dictionary.Keys)
{
//…
Vitaliy
- 8,044
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