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What is the difference between “text” and new String(“text”)?
...als
The program consisting of the compilation unit (§7.3):
package testPackage;
class Test {
public static void main(String[] args) {
String hello = "Hello", lo = "lo";
System.out.print((hello == "Hello") + " ");
System.out.print((Other.hello == hello) + " ");
...
Is it possible to move/rename files in Git and maintain their history?
... each iteration. Plenty of stuff can go wrong when you do this. I normally test to see if the file is present (otherwise it's not there yet to move) and then perform the necessary steps to shoehorn the tree to my liking. Here you might sed through files to alter references to the file and so on. Kno...
What is a loop invariant?
...while ( A[mid] != a && start <= end ) but we shorten the actual test since the first part is implied. This conditional is clearly false after the loop regardless of how the loop terminates.
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Convert List to List
...an entirely new list.
In the original question you could then use:
class Test
{
static void Main(string[] args)
{
A a = new C(); // OK
IList<A> listOfA = new List<C>().CastList<C,A>(); // now ok!
}
}
and here the wrapper class (+ an extention method ...
Why is Thread.Sleep so harmful
...ly here:
Thread.Sleep has its use: simulating lengthy operations while testing/debugging on an MTA thread. In .NET there's no other reason to use it.
Thread.Sleep(n) means block the current thread for at least the number
of timeslices (or thread quantums) that can occur within n
millis...
How to center align the ActionBar title in Android?
...iewActionBar.findViewById(R.id.actionbar_textview);
textviewTitle.setText("Test");
abar.setCustomView(viewActionBar, params);
abar.setDisplayShowCustomEnabled(true);
abar.setDisplayShowTitleEnabled(false);
abar.setDisplayHomeAsUpEnabled(true);
abar.setIcon(R.color.transparent);
abar.setHomeButtonEna...
How do you include additional files using VS2010 web deployment packages?
I am testing out using the new web packaging functionality in visual studio 2010 and came across a situation where I use a pre-build event to copy required .dll's into my bin folder that my app relies on for API calls. They cannot be included as a reference since they are not COM dlls that can be us...
Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
...O1 to
add_100k_signed: # @add_100k_signed
test esi, esi
jle .LBB0_1
mov r9d, esi
xor r8d, r8d
xor esi, esi
xor eax, eax
.LBB0_4: # =>This Inner Loop Header: Depth=1
...
Javascript equivalent of Python's zip function
...if you use the second answer with variadic arguments, you may want to perf test it.)
Here's a oneliner:
function zip(arrays) {
return arrays[0].map(function(_,i){
return arrays.map(function(array){return array[i]})
});
}
// > zip([[1,2],[11,22],[111,222]])
// [[1,11,111],[2,2...
How to check visibility of software keyboard in Android?
...e the height of the action bar. In the new answer that has been ignored by testing if that height is greater than some constant, but 100 pixels is not sufficient for xxhdpi devices such as the Nexus 4. Consider converting that value to DPs if you really want to use this hacky work-around.
...