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Pure virtual function with implementation
...ing like:
class B : public A {
virtual void f() {
// class B doesn't have anything special to do for f()
// so we'll call A's
// note that A's declaration of f() would have to be public
// or protected to avoid a compile time problem
A::f();
}
...
jQuery find events handlers registered with an object
..., "events") but be aware that this is an internal data structure that is undocumented and should not be modified.
– Sam Greenhalgh
Aug 20 '12 at 3:41
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How to center a button within a div?
...es other problems, like the button rises above the containing element, and doesn't work well with resizing.
– CodyBugstein
Mar 19 '14 at 10:29
3
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Histogram using gnuplot?
...r binning data with his/her own decision about where binning starts (as is done on the blog which is linked to above) the functions above are all incorrect. With an arbitrary starting point for binning 'Min', the correct function is:
bin(x) = width*(floor((x-Min)/width)+0.5) + Min
You can see why...
List passed by ref - help me explain this behaviour
...
Indeed I can do that, but I want to know how sort is taking effect
– nmdr
Nov 30 '10 at 6:54
7
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.htaccess not working apache
...ssary for .htaccess files. .htaccess files are specifically for people who don't have root - ie, don't have access to the httpd server config file, and can't restart the server. As you're able to restart the server, you don't need .htaccess files and can use the main server config directly.
Secondl...
Is there a way to detect if a browser window is not currently active?
I have JavaScript that is doing activity periodically. When the user is not looking at the site (i.e., the window or tab does not have focus), it'd be nice to not run.
...
Remove characters except digits from string using Python?
...te works very differently on Unicode strings (and strings in Python 3 -- I do wish questions specified which major-release of Python is of interest!) -- not quite this simple, not quite this fast, though still quite usable.
Back to 2.*, the performance difference is impressive...:
$ python -mtimei...
Impossible to Install PG gem on my mac with Mavericks
...
If you want to avoid using MacPorts, you can download the Postgres App and place it into the Application directory.
Then, specify the location of newly downloaded pg_config:
gem install pg -- --with-pg-config=/Applications/Postgres.app/Contents/Versions/latest/bin/pg...
Android: What's the difference between Activity.runOnUiThread and View.post?
...There is no real difference, except that the View.post is helpful when you don't have a direct access to the activity.
In both cases, if not on UI thread, Handler#post(Runnable) will be called behind the scenes.
As CommonsWare mentioned in the comment, there is a difference between the two - when ca...