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is there a Java equivalent to null coalescing operator (??) in C#? [duplicate]
...imported using import static syntax)
public static <T> T coalesce(T one, T two)
{
return one != null ? one : two;
}
The above is equivalent to Guava's method firstNonNull by @ColinD, but that can be extended more in general
public static <T> T coalesce(T... params)
{
for (T p...
What is the best way to filter a Java Collection?
...
Java 8 (2014) solves this problem using streams and lambdas in one line of code:
List<Person> beerDrinkers = persons.stream()
.filter(p -> p.getAge() > 16).collect(Collectors.toList());
Here's a tutorial.
Use Collection#removeIf to modify the collection in place. (Not...
“Unknown provider: aProvider
...site in Chrome, with the DevTools open. Which results in an error like the one below being logged:
The method in the call trace we're interested in, is the one I marked with an arrow. This is providerInjector in injector.js. You're going to want to place a breakpoint where it throws an exception:...
In a URL, should spaces be encoded using %20 or +? [duplicate]
...he spaces using %20 or + ? For example, in the following example, which one is correct?
6 Answers
...
Delete all the queues from RabbitMQ?
... list queues name
Then from the list, you'll need to manually delete them one by one:
rabbitmqadmin delete queue name='queuename'
Because of the output format, doesn't appear you can grep the response from list queues. Alternatively, if you're just looking for a way to clear everything (read: re...
Time complexity of Euclid's Algorithm
...
One trick for analyzing the time complexity of Euclid's algorithm is to follow what happens over two iterations:
a', b' := a % b, b % (a % b)
Now a and b will both decrease, instead of only one, which makes the analysis ea...
how to show progress bar(circle) in an activity having a listview before loading the listview with d
...f showing a progress bar (circle) while loading an activity. In your case, one with a ListView in it.
IN ACTIONBAR
If you are using an ActionBar, you can call the ProgressBar like this (this could go in your onCreate()
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setProgressBarI...
jquery selector for id starts with specific text [duplicate]
...ach of the divs & use
$('.commonClass').
But you can use the first one if html markup is not in your hands & cannot change it for some reason.
Alternative solution - 2 (not recommended if n is a large number)
(as per @Mihai Stancu's suggestion)
$('#editDialog-0, #editDialog-1, #editDia...
CSS overflow-x: visible; and overflow-y: hidden; causing scrollbar issue
... except that some
combinations with ‘visible’ are not
possible: if one is specified as
‘visible’ and the other is ‘scroll’ or
‘auto’, then ‘visible’ is set to
‘auto’. The computed value of
‘overflow’ is equal to the computed
value of ‘overflow-x’ if ‘o...
How do I decode a string with escaped unicode?
...e.com with JavaScript? I tried unescape , decodeURI , and decodeURIComponent so I guess the only thing left is string replace.
...