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Difference between wait() and sleep()
...ot:
Object mon = ...;
synchronized (mon) {
mon.wait();
}
At this point the currently executing thread waits and releases the monitor. Another thread may do
synchronized (mon) { mon.notify(); }
(on the same mon object) and the first thread (assuming it is the only thread waiting on the mon...
Package objects
...it should be a part of - would have been slightly more proper language api interface.
– matanster
Oct 2 '15 at 16:22
...
How do I detect when someone shakes an iPhone?
...
In 3.0, there's now an easier way - hook into the new motion events.
The main trick is that you need to have some UIView (not UIViewController) that you want as firstResponder to receive the shake event messages. Here's the code that you can use in any UIView to g...
UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?
...sistent stream of upvotes and the equally hackish answers below (no insult intended).
– Jesse Crossen
Oct 7 '14 at 18:36
5
...
Java Regex Capturing Groups
...matcher = pattern.matcher(line);
while (matcher.find()) {
System.out.println("group 1: " + matcher.group(1));
System.out.println("group 2: " + matcher.group(2));
System.out.println("group 3: " + matcher.group(3));
}
Output:
group 1: This order was placed for QT
group 2: 3000
group 3:...
What is the Python equivalent of Matlab's tic and toc functions?
..._exit__(self, type, value, traceback):
if self.name:
print('[%s]' % self.name,)
print('Elapsed: %s' % (time.time() - self.tstart))
It can be used as a context manager:
with Timer('foo_stuff'):
# do some foo
# do some stuff
Sometimes I find this technique more c...
Examples of GoF Design Patterns in Java's core libraries
...ng the factory itself which in turn can be used to create another abstract/interface type)
javax.xml.parsers.DocumentBuilderFactory#newInstance()
javax.xml.transform.TransformerFactory#newInstance()
javax.xml.xpath.XPathFactory#newInstance()
Builder (recognizeable by creational methods returning t...
What is null in Java?
...that could've been avoided. Some say that in a language that catches NullPointerException like Java, it's good to use it because you will fail-fast on programmer errors. Some people avoid null by using Null object pattern, etc.
This is a huge topic on its own, so it's best discussed as answer to an...
Why do I want to avoid non-default constructors in fragments?
...ple your Category object). Be careful, you can't pass this object directly into the bundle, unless it's serializable.
I think it's better to build your object in the fragment, and put only an id or something else into bundle. This is the code to create and attach a bundle:
Bundle args = new Bundle(...
What is the easiest way to remove the first character from a string?
... something guaranteeded to be higher than length, like, str[1,999999] (use int_max of course) to get the whole tail. [1..-1] is cleaner and probably faster, since you don't need to operate on length manually (see the [1..length] in the benchmark)
– quetzalcoatl
...