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How much faster is C++ than C#?
...nly leads to errors due to over-optimizations.
On the other hand, code in interpreted languages gets faster in later versions of the runtime (.NET CLR or Java VM), without you doing anything. And there are a lot of useful optimizations JIT compilers can do that are simply impossible in languages wi...
Java switch statement multiple cases
...class SwitchTest {
public static void main(String[] args){
for(int i = 0;i<10;i++){
switch(i){
case 1: case 2: case 3: case 4: //First case
System.out.println("First case");
break;
case 8: case 9: //Se...
Is it better to reuse a StringBuilder in a loop?
...s Exception {
long time = System.currentTimeMillis();
for( int i = 0; i < 10000000; i++ ) {
StringBuilder sb = new StringBuilder();
sb.append( "someString" );
sb.append( "someString2"+i );
sb.append( "someStrin4g"+i );
sb...
What is the intent of the methods getItem and getItemId in the Android class BaseAdapter?
...a different object than if you requested getItem(position) with position pointing to an item in the candy section. You might then return some sort of constant ID value in getItemId(position) which represents what kind of data getItem(position) is returning, or use instanceof to determine what objec...
how can you easily check if access is denied for a file in .NET?
...cult to track down later and makes it easy for this kind of bug to make it into production.
What this means is that you still have to be able to handle the exception if file permissions or existence are bad, in spite of your check. Exception handling code is required, whether or not you check for t...
In C#, What is a monad?
...t input and since you want to make sure that the functions you combine fit into the way you try to combine them in your monad. But the basic concept is just that you formalize different ways to combine functions together.
sh...
How to make a PHP SOAP call using the SoapClient class
...iting PHP code, but do not often use Object-Oriented coding. I now need to interact with SOAP (as a client) and am not able to get the syntax right. I've got a WSDL file which allows me to properly set up a new connection using the SoapClient class. However, I'm unable to actually make the right cal...
How do I achieve the theoretical maximum of 4 FLOPs per cycle?
How can the theoretical peak performance of 4 floating point operations (double precision) per cycle be achieved on a modern x86-64 Intel CPU?
...
How does std::move() transfer values into RValues?
...ference<Object>::type&&>(arg);
}
Since remove_reference converts T& to T or T&& to T, and Object is not reference, our final function is:
Object&& move(Object&& arg)
{
return static_cast<Object&&>(arg);
}
Now, you might wonder: do we ...
UITableView - change section header color
...
- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 30)] autorelease];
if (section == integerRepresentingYourSectionOfInterest)
[headerView setBackgrou...