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How to unit test abstract classes: extend with stubs?
... Oh no.. another tenet I'm gong to have to rethink! Thanks (both sarcastically for now, and non-sarcastically for once I have assimilated it and feel like a better programmer)
– Martin Lyne
Mar 18 '13 at 10:12
...
How to update PATH variable permanently from Windows command line?
...rentControlSet\Control\Session Manager\Environment registry key, then broadcast a WM_SETTINGCHANGE message with lParam set to the string "Environment". This allows applications, such as the shell, to pick up your updates.
Note that your application will need elevated admin rights in order to be ab...
Purpose of Unions in C and C++
...sn't force the standard to declare it as undefined behaviour - reinterpret_cast has exactly the same endian issues, but has implementation defined behaviour.
– JoeG
Feb 22 '10 at 11:42
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When do you use the “this” keyword? [closed]
...e (struct) value.
To invoke an extension method on the current instance
To cast itself to another type
To chain constructors defined in the same class
You can avoid the first usage by not having member and local variables with the same name in scope, for example by following common naming conventi...
Difference between Arrays.asList(array) and new ArrayList(Arrays.asList(array))
...other interface. See the wrapper pattern article. | Where do you need to upcast? I'd suggest to use List<Integer> for your variable types (or method arguments etc.). This makes your code more generic and you can easily switch to another List implementation as needed, without having to rewrite ...
What is the exact problem with multiple inheritance?
...g part of the problem, if one does not need to allow identity-preserving upcasts and downcasts among all of the types from which an instance is derived or for which it is substitutable. Given X:B; Y:B; and Z:X,Y; assume someZ is an instance of Z. With virtual inheritance, (B)(X)someZ and (B)(Y)som...
Should switch statements always contain a default clause?
...akes appropriate action for unhandled values, in case an invalid value was cast to the enum type. So this may work best for simple cases where you can return within the enum case rather than break.
enum SomeEnum
{
ENUM_1,
ENUM_2,
// More ENUM values may be added in future
};
int foo(So...
Using bitwise OR 0 to floor a number
...
How does it work? Our theory was that using such an operator casts the
number to an integer, thus removing the fractional part
All bitwise operations except unsigned right shift, >>>, work on signed 32-bit integers. So using bitwise operations will convert a float to an in...
Difference between shadowing and overriding in C#?
...Foo()); // output 1
Console.WriteLine(clB.Bar()); // output 1
//now let's cast B to an A class
Console.WriteLine(((A)clB).Foo()); // output 5 <<<-- shadow
Console.WriteLine(((A)clB).Bar()); // output 1
Suppose you have a base class and you use the base class in all your code instead of t...
Literal suffix for byte in .NET?
...
f = float
m = decimal
d = double
If you want to use var, you can always cast the byte as in var y = (byte) 5
Although not really related, in C#7, a new binary prefix was introduced 0b, which states the number is in binary format. Still there is no suffix to make it a byte though, example:
var b...