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How to sort List of objects by some property
...esComparer implements Comparator<ActiveAlarm> {
@Override
public int compare(ActiveAlarm x, ActiveAlarm y) {
// TODO: Handle null x or y values
int startComparison = compare(x.timeStarted, y.timeStarted);
return startComparison != 0 ? startComparison
...
Default initialization of std::array?
...zed array of objects with such types will have indeterminate value, e.g.:
int plain_int;
int c_style_array[13];
std::array<int, 13> cxx_style_array;
Both the c-style array and std::array are filled with integers of indeterminate value, just as plain_int has indeterminate value.
Is there...
Is C++ context-free or context-sensitive?
...e it shows a program which is syntactically correct if and only if a given integer is prime.
So I assert that C++ is neither context-free nor context-sensitive.
If you allow arbitrary symbol sequences on both sides of any production, you produce an Type-0 grammar ("unrestricted") in the Chomsky hi...
Using a bitmask in C#
...unate necessity due to
// C#'s restriction against a where T : Enum constraint. (There are ways around
// this, but they're outside the scope of this simple illustration.)
public static class FlagsHelper
{
public static bool IsSet<T>(T flags, T flag) where T : struct
{
int flag...
How does java do modulus calculations with negative numbers?
... want to get a negative number for negative inputs then you can use this:
int r = x % n;
if (r > 0 && x < 0)
{
r -= n;
}
Likewise if you were using a language that returns a negative number on a negative input and you would prefer positive:
int r = x % n;
if (r < 0)
{
r ...
What's the most efficient way to test two integer ranges for overlap?
Given two inclusive integer ranges [x1:x2] and [y1:y2], where x1 ≤ x2 and y1 ≤ y2, what is the most efficient way to test whether there is any overlap of the two ranges?
...
log4j logging hierarchy order
...o have alternating row colors to guide the viewer that the chart should be interpreted by row rather than column. (i.e. the rows represent logger levels and the columns represent log message types that would be present)
– Larry Hector
Jun 10 '18 at 3:12
...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
...gs) throws Exception {
QuickRandom qr = new QuickRandom();
int[] frequencies = new int[10];
for (int i = 0; i < 100000; i++) {
frequencies[(int) (qr.random() * 10)]++;
}
printDistribution("QR", frequencies);
frequencies = new int[10];
...
VBA - how to conditionally skip a for loop iteration
...uld be avoided here as well. In some ways, the link you posted makes my point. The link is to the GoTo statement in VB.Net. VB.Net has both structured error handling and Continue For/Continue Do statements. There is truly no need for GoTo in VB.Net; I suspect it was left in place largely to supp...
File Upload in WebView
...
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE=1;
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
if(requestCode==FILECHOOSER_RESULTCODE)
{
if ...