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C# vs Java Enum (for those new to C#)
...rations in the CLR are simply named constants. The underlying type must be integral. In Java an enumeration is more like a named instance of a type. That type can be quite complex and - as your example shows - contain multiple fields of various types.
To port the example to C# I would just change t...
Get value from JToken that may not exist (best practices)
...t also complex objects. Here is a sample
public class ClassA
{
public int I;
public double D;
public ClassB ClassB;
}
public class ClassB
{
public int I;
public string S;
}
var jt = JToken.Parse("{ I:1, D:3.5, ClassB:{I:2, S:'test'} }");
int i1 = jt.GetValue<int>("I");
d...
How to concatenate two strings in C++?
...something like:
char * con(const char * first, const char * second) {
int l1 = 0, l2 = 0;
const char * f = first, * l = second;
// step 1 - find lengths (you can also use strlen)
while (*f++) ++l1;
while (*l++) ++l2;
char *result = new char[l1 + l2];
// then concatena...
Cleaner way to update nested structures
... I'll reproduce his example here:
scala> @zip case class Pacman(lives: Int = 3, superMode: Boolean = false)
scala> @zip case class Game(state: String = "pause", pacman: Pacman = Pacman())
scala> val g = Game()
g: Game = Game("pause",Pacman(3,false))
// Changing the game state to "run" ...
How can I properly handle 404 in ASP.NET MVC?
...lobal.asax, too much of the HttpContext is missing. You can not route back into your controllers like the example suggests. Refer to the comments in the blog link at top.
– Matt Kocaj
May 16 '10 at 5:56
...
How do I get the resource id of an image if I know its name?
...
With something like this:
String mDrawableName = "myappicon";
int resID = getResources().getIdentifier(mDrawableName , "drawable", getPackageName());
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Memory address of variables in Java
...ms fit (your objects may/will move around during garbage collection etc.)
Integer.toBinaryString() will give you an integer in binary form.
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Read error response body in Java
...o manage it
... connection code code code ...
// Get the response code
int statusCode = connection.getResponseCode();
InputStream is = null;
if (statusCode >= 200 && statusCode < 400) {
// Create an InputStream in order to extract the response object
is = connection.getInpu...
What's the best practice for primary keys in tables?
... of the little things matter. Just imagine if you have 1 billion rows with int or long pk's compared to using text or guid's. There's a huge difference!
– Logicalmind
Dec 3 '08 at 20:31
...
What is the difference between '/' and '//' when used for division?
... 5 / 2 will return 2.5 and 5 // 2 will return 2. The former is floating point division, and the latter is floor division, sometimes also called integer division.
In Python 2.2 or later in the 2.x line, there is no difference for integers unless you perform a from __future__ import division, which ...