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Converting List to List
... List<Integer> and I'd like to convert all the integer objects into Strings, thus finishing up with a new List<String> .
...
Performance of Arrays vs. Lists
...ts; i++ )
{
j = theList[i];
}
chrono.Stop ();
Console.WriteLine (String.Format("iterating the List took {0} msec", chrono.ElapsedMilliseconds));
chrono.Reset();
chrono.Start();
for( int i = 0; i < numberOfElements; i++ )
{
j = theArray[i];
}
chrono.Stop ();
Console.Write...
What is the colon operator in Ruby?
...what exactly does the : do? I read somewhere about how it's similar to a string, but somehow a symbol.
9 Answers
...
ExecutorService that interrupts tasks after a timeout
...lem with the following (very crude) test program:
public static void main(String[] args) throws InterruptedException {
ExecutorService service = new TimeoutThreadPoolExecutor(1, 1, 10, TimeUnit.SECONDS,
new LinkedBlockingQueue<Runnable>(), 10, TimeUnit.MINUTES);
//Executo...
Smooth scrolling when clicking an anchor link
...ash);
});
Explanation of href*=\\#:
* means it matches what contains # char. Thus only match anchors. For more about the meaning of this, see here
\\ is because the # is a special char in css selector, so we have to escape it.
...
What is the proper way to use the node.js postgresql module?
...y. Yeah, it's async and so that's alright...but wouldn't you
rather multiply your throughput by 10x? Use pg.connect set the
pg.defaults.poolSize to something sane (we do 25-100, not sure the
right number yet).
new pg.Client is for when you know what you're doing. When you need
a sin...
Building a notification system [closed]
...
notification_object.object identifies change type, like a string "friendship" The actual reference to changed object with its extra data that I talk about is in notification_change.notificationObjectID
– Artjom Kurapov
Apr 29 '13 at 7:35
...
round up to 2 decimal places in java? [duplicate]
...
String roundOffTo2DecPlaces(float val)
{
return String.format("%.2f", val);
}
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Best database field type for a URL
...oc/refman/5.0/en/char.html
Values in VARCHAR columns are variable-length strings. The length can be specified as a value from 0 to 255 before MySQL 5.0.3, and 0 to 65,535 in 5.0.3 and later versions. The effective maximum length of a VARCHAR in MySQL 5.0.3 and later is subject to the maximum row s...
Weird Integer boxing in Java
...
public class Scratch
{
public static void main(String[] args)
{
Integer a = 1000, b = 1000; //1
System.out.println(a == b);
Integer c = 100, d = 100; //2
System.out.println(c == d);
}
}
Output:
false
true
Yep the first output...