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Difference between
...at you can only read from it and you'll get a T or subclass of T.
super
Now consider List <? super T>.
The wildcard declaration of List<? super Integer> foo3 means that any of these are legal assignments:
List<? super Integer> foo3 = new ArrayList<Integer>(); // Integer...
Update Eclipse with Android development tools v. 23
I updated Eclipse with the new SDK tools (rev. 23), but now when Eclipse starts I receive the error:
43 Answers
...
How can I rename a project folder from within Visual Studio?
...ove the project from the solution, by right clicking and selecting Remove.
Now, in Windows Explorer, rename the project folder.
Go back to Visual Studio, and in Solution Explorer, right click the solution and choose Add -> Existing project. Select the project file for the project you removed in s...
How do I install Python OpenCV through Conda?
...
I have summarized my now fully working solution, OpenCV-Python - How to install OpenCV-Python package to Anaconda (Windows). Nevertheless I've copied and pasted the important bits to this post.
At the time of writing I was using Windows 8.1, 6...
Hudson vs Jenkins in 2012 [closed]
... was a little bit faster.
What is the situation with "Hudson vs Jenkins" now in 2012?
3 Answers
...
Combining multiple git repositories
...f phd/figures and phd/thesis (just replace code with figures and thesis).
Now your directory structure should look like this:
phd
|_code
| |_.git
| |_code
| |_(your code...)
|_figures
| |_.git
| |_figures
| |_(your figures...)
|_thesis
|_.git
...
Expand a random range from 1–5 to 1–7
... sampling, e.g.:
int i;
do
{
i = 5 * (rand5() - 1) + rand5(); // i is now uniformly random between 1 and 25
} while(i > 21);
// i is now uniformly random between 1 and 21
return i % 7 + 1; // result is now uniformly random between 1 and 7
This has an expected runtime of 25/21 = 1.19 itera...
Why do people put code like “throw 1; ” and “for(;;);” in front of json responses? [du
...Chrome (5) are still vulnerable to this.
Another attack that all browsers now disallow was to redefine constructor functions:
Array= function() {
alert('I steal '+this);
};
[1, 2, 3]
And for now, IE8's implementation of properties (based on the ECMAScript Fifth Edition standard and Object.d...
How to scroll to an element inside a div?
...t_within_div');
var topPos = myElement.offsetTop;
The variable topPos is now set to the distance between the top of the scrolling div and the element you wish to have visible (in pixels).
Now we tell the div to scroll to that position using scrollTop:
document.getElementById('scrolling_div').scr...
How do I expire a PHP session after 30 minutes?
...of the last activity of the user but update that value with every request. Now if the difference of that time to the current time is larger that 1800 seconds, the session has not been used for more than 30 minutes.
– Gumbo
Aug 9 '10 at 16:37
...