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Why do we need virtual functions in C++?
...eclaration and calls in a main function etc. Pointer-to-derived implicitly casts to pointer-to-base (more specialized implicitly casts to more general). Visa-versa you need an explicit cast, usually a dynamic_cast. Anything else - very prone to undefined behavior so make sure you know what you're do...
Order of event handler execution
...store for a particular event. The default backing store for events, multi-cast delegates, are documented as executing in registration order. This will not change in a future framework version. What may change is the backing store used for a particular event.
– HappyNomad
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What is the use of the ArraySegment class?
...ugh they inexplicably made GetEnumerator private, meaning you're forced to cast to IEnumerable<T> (a boxing conversion) to call it. Ugh!
– BlueRaja - Danny Pflughoeft
Nov 1 '17 at 12:59
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Do I really have a car in my garage? [duplicate]
...rYears on a Vehicle without caring about the implementation.
Usually, downcasting is a sign of a flawed design: do not store your vehicles all together if you need to differenciate their actual type.
Note: of course the design here can be easily improved. It is just an example to demonstrate the p...
Why doesn't Java allow generic subclasses of Throwable?
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Yes, but why isn't it flagged as "unsafe" then, as with casts for example?
– eljenso
Feb 1 '09 at 19:17
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{" was not expected.} Deserializing Twitter XML
...ializer is instantiated with aResponse but on deserializing I accidentally casted it to bResonse.
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Call Activity method from adapter
... I would strongly suggest NOT TO USE this solution. You should avoid class casting here, because this might lead to runtime exceptions.
– Igor Filippov
Nov 14 '14 at 10:18
3
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How to parse JSON in Scala using standard Scala classes?
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This is a solution based on extractors which will do the class cast:
class CC[T] { def unapply(a:Any):Option[T] = Some(a.asInstanceOf[T]) }
object M extends CC[Map[String, Any]]
object L extends CC[List[Any]]
object S extends CC[String]
object D extends CC[Double]
object B extends CC[B...
How to get the Display Name Attribute of an Enum member via MVC razor code?
...eturn value.GetType().GetFields(BindingFlags.Static | BindingFlags.Public).Select(fi => fi.Name).ToList();
}
public static IList<string> GetDisplayValues(Enum value)
{
return GetNames(value).Select(obj => GetDisplayValue(Parse(obj))).ToList();
}
private stat...
How do I concatenate multiple C++ strings on one line?
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Try this: std::string s = static_cast<std::ostringstream&>(std::ostringstream().seekp(0) << "HelloWorld" << myInt << niceToSeeYouString).str();
– Byzantian
Jan 7 '13 at 2:12
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