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Can't create handler inside thread that has not called Looper.prepare()
...to create one, call
prepare() in the thread that is to run the loop, and then loop() to
have it process messages until the loop is stopped.
class LooperThread extends Thread {
public Handler mHandler;
public void run() {
Looper.prepare();
mHandler = new Handler() {
...
Android: How to turn screen on and off programmatically?
...be; if your device is actually allowing the screen to turn completely off, then it is some peculiarity of the implementation of that device and not a behavior you can count on across devices.
In fact using this in conjunction with FLAG_KEEP_SCREEN_ON means that you will never allow the screen to go...
How to turn on line numbers in IDLE?
...
If using brackets for scoping is confusing, then line numbers is rocket science.
– aj.toulan
May 30 '18 at 17:33
2
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How can I pass a parameter to a setTimeout() callback?
...n the anonymous function change before the timeout (such as in a for loop) then it will also change inside the function. So in my example setting 5 different timeouts in a for loop actually ended up using the same variables. Be careful when using this answer!
– Cristian
...
Why does JPA have a @Transient annotation?
...n. So if you use the transient keyword to prevent serialization of a field then it will not end up in the database either.
– neXus
Oct 25 '18 at 12:13
add a comment
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Create batches in linq
...how what terribly means? If you are loading millions of items into memory, then I wouldn't do it. Use server-side paging
– Sergey Berezovskiy
Jul 11 '13 at 19:26
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What are bitwise shift (bit-shift) operators and how do they work?
...lt;< 4), we get 2,147,483,744:
10000000 00000000 00000000 01100000
and then shifting back ((939,524,102 << 4) >>> 4) we get 134,217,734:
00001000 00000000 00000000 00000110
We cannot get back our original value once we have lost bits.
Arithmetic right shift (>>)
The arithm...
How do I convert a float number to a whole number in JavaScript?
...n.
But if you need your code to work with positives as well as negatives, then a bitwise operation is the fastest (OR being the preferred one). This other JSPerf test compares the same where it's pretty obvious that because of the additional sign checking Math is now the slowest of the four.
Note
...
How to run test methods in specific order in JUnit4?
...efore all the others. I will probably write a BeforeClass that logs in and then write the tests to execute in any order.
– marcospereira
Oct 22 '12 at 0:51
49
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REST API Login Pattern
...ngle request should contains all required information, and authorization/authentication is not an exception. How to achieve this? Literally send all required information over wires with every request.
One of examples how to archeive this is hash-based message authentication code or HMAC. In practic...