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Is there a performance difference between i++ and ++i in C++?
...it, even if you are not right now.
Knuth.
Premature optimization is the root of all evil. As is premature pessimization.
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Picking a random element from a set
...can use a tree if each node contains the number of nodes in the subtree it roots. Then compute a random real in 0..1 and make a weighted 3-way decision (select current node or descend into left or right subtree) at each node based on the node counts. But imo your solution is much nicer.
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How can I display an image from a file in Jupyter Notebook?
...image path should start with / so that it is an absolute path from the web root, i.e. 
– ccpizza
Jun 28 '18 at 17:43
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Android mock location on device?
...Maybe it is possible with a terminal application but I think that requires root access
– Janusz
Apr 6 '10 at 18:49
Jus...
Good examples of MVVM Template
...on, and overall I like Unity quite a bit.
Usually, it makes sense for the root window to subscribe to this event - it can open the dialog and set its data context to the ViewModel that gets passed in with a raised event.
Setting this up in this way lets ViewModels ask the application to open a dia...
CodeIgniter activerecord, retrieve last insert id?
...db->insert_id()
// it can be return insert id it is
// similar to the mysql_insert_id in core PHP
You can refer this link you can find some more stuff.
Information from executing a query
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Where is debug.keystore in Android Studio
...nd will fetch all your key-stores, go to your terminal and in your android root directory run this:
./gradlew signingReport
it will give you something like this a list of key-store and their information:
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What is the difference between a symbolic link and a hard link?
...u can unmount/remount a file system any time it is not being used. For the root partition this is a bit tricky but it can be done (not recomended). To do it for the root it is usually best to boot of a rescuse CD first modify the mounts and re-boot. But you should ask this kind of question on super ...
How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?
...screen of Android Studio. Then click on the name of the app(e.g android123(root): it should appear like this). After that, you will find a subfolder named android and clicking on it go for the signingReport.It should run in the console and should show you the SHA 1,MD 5. Hope it helps.
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How to remove focus without setting focus to another control?
...ontent).clearFocus();
in connection with the following parameters on the root view.
<?xml
android:focusable="true"
android:focusableInTouchMode="true"
android:descendantFocusability="beforeDescendants" />
https://developer.android.com/reference/android/view/ViewGroup#attr_andr...