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Why is there no Constant feature in Java?
...onst int x = 42;
std::cout << x << std::endl;
*const_cast<int*>(&x) = 7;
std::cout << x << std::endl;
return 0;
}
outputs 42 then 7.
Although x marked as const, as a non-const alias is created, x is not a constant. Not every compiler requires ...
Extension methods cannot be dynamically dispatched
...ou are using dynamic types in extension methods, which is not supported.
Cast the dynamic types to actual types, and it will work.
From what I see now, I'd say:
(string) ViewBag.MagNo
Which would result in
@foreach (var item in Model)
{
@Html.DropDownListFor(modelItem => item.TitleIds,...
Possible heap pollution via varargs parameter
...istOfAs; // points to a list of As
This can lead to "unexplainable" ClassCastExceptions.
// if the heap never gets polluted, this should never throw a CCE
B b = listOfBs.get(0);
@SafeVarargs does not prevent this at all. However, there are methods which provably will not pollute the heap, the ...
in a “using” block is a SqlConnection closed on return or exception?
...
Here is my Template. Everything you need to select data from an SQL server. Connection is closed and disposed and errors in connection and execution are caught.
string connString = System.Configuration.ConfigurationManager.ConnectionStrings["CompanyServer"].Connection...
Call static method with reflection
... .Where(x => x.Namespace.ToUpper().Contains("MACRO"))
.Select(t => (Action)Delegate.CreateDelegate(
typeof(Action),
null,
t.GetMethod("Run", System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public)))
...
How to use WHERE IN with Doctrine 2
..., array(1, 2),
\Doctrine\DBAL\Connection::PARAM_INT_ARRAY);
Tested for select/delete in symfony 3.4 & doctrine-bundle: 1.8
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Check for column name in a SqlDataReader object
... called "EmployeeName" but also give it an alias of "EmpName", and doing a select for either name would return the data in that column. With me so far?
Now imagine that there's an ADO.NET provider for that database, and they've coded up an IDataReader implementation for it which takes column aliase...
How do I sort an NSMutableArray with custom objects in it?
...
I did this in iOS 4 using a block.
Had to cast the elements of my array from id to my class type.
In this case it was a class called Score with a property called points.
Also you need to decide what to do if the elements of your array are not the right type, for thi...
Adding a new value to an existing ENUM Type
...rget enum):
INSERT INTO pg_enum (enumtypid, enumlabel, enumsortorder)
SELECT 'type_egais_units'::regtype::oid, 'NEW_ENUM_VALUE', ( SELECT MAX(enumsortorder) + 1 FROM pg_enum WHERE enumtypid = 'type_egais_units'::regtype )
...
SQL Server: converting UniqueIdentifier to string in a case statement
...
Alternatively, cast(RequestID as varchar(50))
– MK_Dev
Jun 9 '11 at 22:17
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