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When to use Comparable and Comparator
...use of the class, or the sorting only makes sense for a specific use case, then a Comparator is a better option.
Put another way, given the class name, is it clear how a comparable would sort, or do you have to resort to reading the javadoc? If it is the latter, odds are every future sorting use ca...
Is there a performance impact when calling ToList()?
...on) constructor checks if collection parameter is ICollection<T> and then creates a new internal array with required size right away. If parameter collection is not ICollection<T>, constructor iterates through it and calls Add for each element.
– Justinas Simanavici...
jQuery get html of container including the container itself
...;').parent().html();. The idea of wrap is great and allot less complicated then most of the solutions provided.
– Pinkie
Jun 24 '11 at 0:18
...
Opening the Settings app from another app
...onfirm,
I Just downloaded this morning and disabled Location services, and then started the app, which asked me for location permission and then my alert popup was there to send me on settings -> location services page --> Enabled --> That's it!!
![NOTICE:
Your app might be rejected ... ev...
how does multiplication differ for NumPy Matrix vs Array classes?
...compared to a "normal" numpy array. If all you're doing is linear algebra, then by all means, feel free to use the matrix class... Personally I find it more trouble than it's worth, though.
For arrays (prior to Python 3.5), use dot instead of matrixmultiply.
E.g.
import numpy as np
x = np.arange(...
AngularJS HTTP post to PHP and undefined
...arjs setting of application/json as header, read the raw input in PHP, and then deserialize the JSON.
That can be achieved in PHP like this:
$postdata = file_get_contents("php://input");
$request = json_decode($postdata);
$email = $request->email;
$pass = $request->password;
Alternately, i...
examining history of deleted file
...the revision number where the file got deleted:
svn log -v > log.txt
Then look in log.txt (not an SVN guru, so I don't know a better way) for a line with
D <deleted file>
and see which revision that was. Then, as in the other answers, resurrect the file using the previous revision.
...
When to use Mockito.verify()?
...f class A includes the fact that it calls method B of an object of type C, then you should test this by making a mock of type C, and verifying that method B has been called.
This implies that the contract of class A has sufficient detail that it talks about type C (which might be an interface or a ...
How to generate a random number in C++?
...ndamental problem of your test application is that you call srand once and then call rand one time and exit.
The whole point of srand function is to initialize the sequence of pseudo-random numbers with a random seed.
It means that if you pass the same value to srand in two different applications (w...
Can you animate a height change on a UITableViewCell when selected?
... the original height normally via the tableView: heightForRowAtIndexPath:, then when you want to animate a height change, simply change the value of the variable and call this...
[tableView beginUpdates];
[tableView endUpdates];
You will find it doesn't do a full reload but is enough for the UITa...