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What is the best way to solve an Objective-C namespace collision?
...inters to any symbols they reference, whereas in Objective-C, they contain string representations of the names of thsoe symbols. Thus, in your example, you can use dlsym to get the symbol's address in memory and attach it to another symbol. The other code in the library still works because you're no...
Why Func instead of Predicate?
...x)
{
Console.WriteLine(x.Message);
}
static void Main(string[] args)
{
// can assign any method having the right pattern
ExceptionHandler1 x1 = MyExceptionHandler;
// and yet cannot assign a delegate with identical declaration!
ExceptionHand...
Abstract class in Java
...e main method you can call all methods like this:
public static void main(String args[]){
GraphicObject c = new Circle();
c.draw();
c.resize();
c.moveTo(4,5);
}
Ways to achieve abstraction in Java
There are two ways to achieve abstraction in java
Abstract class (0 to 100%)
Inte...
How to create module-wide variables in Python? [duplicate]
...r this example, the simple if not __DBNAME__ test is adequate, because any string value other than an empty string will evaluate true, so any actual database name will evaluate true. But for variables that might contain a number value that might be 0, you can't just say if not variablename; in that...
Why hasn't functional programming taken over yet?
... problems we face. Our problems are all about taking in raw information -- strings and metadata -- and transforming them into different strings and metadata. In situations where mutations occur, like someone is typing in the IDE, the problem space inherently lends itself to functional techniques suc...
Should 'using' directives be inside or outside the namespace?
... using Guid = System.Guid;
public class Guid
{
public Guid(string s)
{
}
}
public class Program
{
public static void Main(string[] args)
{
Guid g = new Guid("hello");
}
}
}
The code fails on the following compiler...
Android ImageView Zoom-in and Zoom-Out
...ut extends Activity implements OnTouchListener
{
private static final String TAG = "Touch";
@SuppressWarnings("unused")
private static final float MIN_ZOOM = 1f,MAX_ZOOM = 1f;
// These matrices will be used to scale points of the image
Matrix matrix = new Matrix();
Matrix s...
How can I add to List
...t you add a number
untypedList.add(200);
// But it will also let you add a String! BAD!
untypedList.add("foo");
// YOU PROBABLY WANT THIS
// This is safer, because it will (partially) check the type of anything you add
List<Number> superclassedList = (List<Number>)(List<?>)list;
...
Most efficient way of making an if-elif-elif-else statement when the else is done the most?
...for 'this', 'that', and 'there' - and then comparing hash codes instead of strings. That turned out to be twice as slow as the original, so it looks like string comparisons are already pretty well optimised internally.
– foz
Jun 18 '13 at 16:23
...
Seeding the random number generator in Javascript
...lly, hash functions are very good at generating seeds for PRNGs from short strings. A good hash function will generate very different results even when two strings are similar. Here's an example based on MurmurHash3's mixing function:
function xmur3(str) {
for(var i = 0, h = 1779033703 ^ str.le...