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FFmpeg on Android
...o + Audio
Video = Codec + Muxer + Demuxer
codec = encoder + Decoder
=> Video = encoder + decoder + Muxer + Demuxer(Mpeg4 + Mpeg4 + avi +avi - Example for avi container)
Audio = Codec + Muxer + Demuxer
codec = encoder + Decoder
=> Audio = encoder + decoder + Muxer + Demuxer(mp2 + mp2 ...
Explanation of JSONB introduced by PostgreSQL
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First, hstore is a contrib module, which only allows you to store key => value pairs, where keys and values can only be texts (however values can be sql NULLs too).
Both json & jsonb allows you to store a valid JSON value (defined in its spec).
F.ex. these are valid JSON representations:...
UITableView set to static cells. Is it possible to hide some of the cells programmatically?
...(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
var cell = super.tableView(tableView, cellForRowAtIndexPath: indexPath)
if cell == self.cellYouWantToHide {
return 0
}
return super.tableView(tableView, heightForRowAtIndexPath: indexPa...
Application Skeleton to support multiple screens
...sy to create multiple emulators (from the Eclipse menu bar, select Window > AVD Manager > New) configured with values for real devices:
Name the emulator for the real device it's emulating
Specify Resolution, don't use Built-in generic sizes
Set the device density to match the real device (in...
How do you clone a BufferedImage
... the just obtained newImage also affects the original image in any way.
--> Javadoc for getScaledInstance
--> Javadoc for SCALE_DEFAULT (the other constants are listed just below that one)
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What is the difference between linear regression and logistic regression?
...viously passes through y=.5 ), ten if any point is above this line y=.5 => +ve , else -ve. So then why do I need a logistic regression. Im just trying to understand the best case explanation to use logistic regression ?
– vinita
May 28 '15 at 9:15
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In Sublime Text 2, how do I open new files in a new tab?
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OSX-Only: Add the following to Preferences > Settings - User or ⌘ + , :
"open_files_in_new_window": false
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When should you not use virtual destructors?
...utex *mtx_;
public:
explicit MutexLock(mutex *mtx) : mtx_(mtx) { mtx_->lock(); }
~MutexLock() { mtx_->unlock(); }
private:
MutexLock(const MutexLock &rhs);
MutexLock &operator=(const MutexLock &rhs);
};
The whole point of this class is to sit on the stack for RAII...
How to convert a selection to lowercase or uppercase in Sublime Text
...No problem, add the built-in functions to your key bindings (Preferences -> Key Bindings-User): [ { "keys": ["super+k", "super+t"], "command": "title_case" }, ]
– Alexei Danchenkov
Sep 26 '14 at 5:59
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How do I update the notification text for a foreground service in Android?
...n getMyActivityNotification(String text){
if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.O){
((NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE)).createNotificationChannel(
NotificationChannel("timer_notification","Timer Notification",NotificationManager.IM...