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Understanding events and event handlers in C#
I understand the purpose of events, especially within the context of creating user interfaces. I think this is the prototype for creating an event:
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'Contains()' workaround using Linq to Entities?
... the where clause, using the Silverlight ADO.Net Data Services client api (and therefore Linq To Entities). Does anyone know of a workaround to Contains not being supported?
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What is the difference between syntax and semantics in programming languages?
What is the difference between syntax and semantics in programming languages (like C, C++)?
10 Answers
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C# “as” cast vs classic cast [duplicate]
... thrown. With the as method, it results in null, which can be checked for, and avoid an exception being thrown.
Also, you can only use as with reference types, so if you are typecasting to a value type, you must still use the "classic" method.
Note:
The as method can only be used for types that c...
Why should I use the keyword “final” on a method parameter in Java?
I can't understand where the final keyword is really handy when it is used on method parameters.
12 Answers
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What is the meaning of the term “free function” in C++?
...ion for boost::test, I came across the term "free function". What I understand is that a free function is any function that doesn't return anything (Its return type is void). But after reading further it seems that free functions also don't take any arguments. But I am not sure. These all are my ass...
ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
In a nutshell the exception is thrown during POSTing wrapper model and changing the state of one entry to 'Modified'. Before changing the state, the state is set to 'Detached' but calling Attach() does throw the same error. I'm using EF6.
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How many String objects will be created when using a plus sign?
...;
Furthermore, the compiler will remove extraneous constant expressions, and only emit them if they are used or exposed. For instance, this program:
const String one = "1";
const String two = "1";
const String result = one + two + "34";
public static void main(string[] args) {
Console.Out.W...
Overriding superclass property with different type in Swift
...properties. Instead you can create an extra variable in the subclass that handles the new class type:
class Chassis {}
class RacingChassis : Chassis {}
class Car {
var chassis = Chassis()
}
class RaceCar: Car {
var racingChassis = RacingChassis()
override var chassis: Chassis {
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Showing Difference between two datetime values in hours
...her example of subtracting two dates in C# ...
if ( DateTime.Now.Subtract(Convert.ToDateTime(objDateValueFromDatabase.CreatedOn)).TotalHours > 24 )
{
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}
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