Hello all,
I have one doubt concerning c# method overloading and call resolution.
Let's suppose I have the following C# code:
enum MyEnum { Value1, Value2 }
public void test() {
method(0); // this calls method(MyEnum)
method(1); // this calls method(object)
}
public void method(object o) {
}
public void method(MyEnum e) {
...
I would like to do this but it does not work.
bool TryGetEnum<TEnum, TValue>(TValue value, out TEnum myEnum)
{
value = default(TEnum);
if (Enum.IsDefined(typeof(TEnum), value))
{
myEnum = (TEnum)value;
return true;
}
return false;
}
Example usage:
MyEnum mye;
bool success = this.TryGetEnum<MyEnum,...
Problem:
I am using a big C/C++ code base which works on gcc & visual studio compilers where enum base type is by default 32-bit(integer type).
This code also has lots of inline + embedded assembly which treats enum as integer type and enum data is used as 32-bit flags in many cases.
When compiled this code with realview ARM RVCT 2.2 ...
Is it possible to test for enum equality in JSF?
i.e.
<h:outputText value="text" rendered="#{myBean.enum==BeanEnum.enum1}"/>
...
I have a field with enums: 'preview','active','closed'
When I query like this:
$query = "UPDATE albums
SET album_active = preview
WHERE album_id = 3";
$result = mysql_query($query);
if (!$result) die('Invalid query: ' . mysql_error());
I get
: Invalid query: Unknown column 'p...
So this is more of a generalized question about MySQLs data types. I'd like to store a 5-digit US zip code (zip_code) properly in this example.
A county has 10 different cities and 5 different zip codes.
city | zip code
-------+----------
city 0 | 33333
city 1 | 11111
city 2 | 22222
city 3 | 33333
city 4 | 44444
city 5 | 55555
city...
Hi,
How thread-safe is enum in java?
I am implementing a Singleton using enum (as per Bloch's Effective Java),
should I worry at all about thread safety for my singleton enum?
Is there a way to prove or disprove that it is thread safe?
// Enum singleton - the preferred approach
public enum Elvis {
INSTANCE;
public void leaveTh...
Hi,
Why is the Elvis elvis definition has to be final to be used inside the Thread run() method?
Elvis elvis = Elvis.INSTANCE; // ----> should be final Elvis elvis = Elvis.INSTANCE
elvis.sing(4);
Thread t1 = new Thread(
new Runnable() {
@Override
public void run() {
elvis.sing(6); // --------> elvis has to be final to c...
Suppose I have the following:
typedef enum functionType {ln, sin, sqrt} functionType;
NSArray *functions = [NSArray arrayWithObjects: @"ln", @"sin", @"sqrt", nil];
Suppose further that *functions will not change at runtime.
Question -- is there any way to set up a single structure which updates both of these? So that I only have t...
Hi Guys,
considering the following enum:
public enum LeadStatus
{
Cold = 1,
Warm = 2,
Hot = 3,
Quote = 5,
Convert = 6
}
How can I convert the integer value back to string when I pull the value from a database. I've tried:
DomainModel.LeadStatus status = (DomainModel.LeadStatus)Model.Status;
but all I se...
I have a program with a class that contains a public enum, as follows:
public class Card
{
public enum card_suits
{
Clubs,
Hearts,
Spades,
Diamonds
}
...
I want to use this elsewhere in my project, but can't do that without using Card.card_suit. Does anyone know if there's a way in C# to de...
I saw code similar to this in the Mac OS SDK:
enum {
kAudioFileStreamProperty_ReadyToProducePackets = 'redy',
kAudioFileStreamProperty_FileFormat = 'ffmt',
kAudioFileStreamProperty_DataFormat = 'dfmt',
kAudioFileStreamProperty_FormatList = 'flst',
kAudioFileStreamProperty_Magic...
I've started a rather large Enum of so called Descriptors that I've wanted to use as a reference list in my model. But now I've come across a compiler/VM limit the first time and so I'm looking for the best solution to handle this.
Here is my error : The code for the static initializer is exceeding the 65535 bytes limit
It is clear whe...
I recently inherited an application developed with bare servlets and JSPs (i.e.: no frameworks). I've been tasked with cleaning up the error-handling workflow. Currently, each <form> in the workflow submits to a servlet, and based on the result of the form submission, the servlet does one of two things:
If everything is OK, the servlet...
I find this solution
$metadata = $result->getTable()->info('metadata');
echo $metadata['Continent']['DATA_TYPE'];
Hi,
I want to get enum values in Zend_Db.
My Code:
$select = $this->select();
$result = $select->fetchAll();
print_r($result->getTable());
Output:
Example Object
(
[_name] => country
[query] => Zend_Db_Table_Se...
Given the following flags,
[Flags]
public enum Operations
{
add = 1,
subtract = 2,
multiply = 4,
divide = 8,
eval = 16,
}
How could I implement an IF condition to perform each operation? In my attempt, the first condition is true for add, eval, which is correct. However the first c...
Hi there,
I have an enum type on my Java model which I'd like to map to a table on the database. I'm working with Hibernate Annotations and I don't know how to do that. Since the answers I search were rather old, I wonder which way is the best?
Thanks in advance
...
In sample code, I have seen this:
typedef enum Ename { Bob, Mary, John} EmployeeName;
and this:
typedef enum {Bob, Mary, John} EmployeeName;
and this:
typedef enum {Bob, Mary, John};
but what compiled successfully for me was this:
enum {Bob, Mary, John};
I put that line in a .h file above the @interface line, and then when I ...
Is it possible to define operators for enums? For example I have enum Month in my class and I would like to be able to write ++my_month.
Thanks
P.S.
In order to avoid overflowing I did something like this:
void Date::add_month()
{
switch(my_month_)
{
case Dec:
my_month_ = Jan;
add_year();
break;
...
I would like to be able to write:
cout << enumalpha << Monday;
and get printed on console:
Monday
P.S. Monday is an enum type.
...