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How can i tell if an object has a key value observer attached
if you tell an objective c object to removeObservers: for a key path and that key path has not been registered, it cracks the sads. like -
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FixedThreadPool vs CachedThreadPool: the lesser of two evils
...ith my very limited knowledge of multithreading, I considered the average life of the threads (several minutes) " long lived ".
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Visual Studio jump to next error shortcut?
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F8 (and Shift+F8 to go backwards).
Or at least that's what it is in my keyboard profile - you can go to tools\options\environment\keyboard and check out Edit.GoToNextLocation.
Note If you configured Visual Studio using VB keyboard se...
Object.getOwnPropertyNames vs Object.keys
What's the difference between Object.getOwnPropertyNames and Object.keys in javascript? Also some examples would be appreciated.
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I want my android application to be only run in portrait mode?
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In the manifest, set this for all your activities:
<activity android:name=".YourActivity"
android:configChanges="orientation"
android:screenOrientation="portrait"/>
Let me explain:
With android:configChanges="orienta...
jQuery - multiple $(document).ready …?
...emember seeing $(function() { // do stuff }); for the first time, and how difficult it was to Google the explanation? $(document).ready communicates so much more for so little...
– Matt Montag
Oct 15 '13 at 20:19
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What is the difference between PS1 and PROMPT_COMMAND
... http://www.gnu.org/software/bash/manual/bashref.html
PROMPT_COMMAND
If set, the value is interpreted as a command to execute before
the printing of each primary prompt ($PS1).
I never used it, but I could have used this back when I only had sh.
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Why java.util.Optional is not Serializable, how to serialize the object with such fields
...hat the caller immediately check the Optional and extract the actual value if it's present. If the value is absent, the caller can substitute a default value, throw an exception, or apply some other policy. This is typically done by chaining fluent method calls off the end of a stream pipeline (or o...
What is the difference between packaged_task and async
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Actually the example you just gave shows the differences if you use a rather long function, such as
//! sleeps for one second and returns 1
auto sleep = [](){
std::this_thread::sleep_for(std::chrono::seconds(1));
return 1;
};
Packaged task
A packaged_task won...
Infinite scrolling with React JS
...s is a great technique... thx! However, it fails when the recordHeight is different for each row. I'm experimenting with a fix for that situation. I'll post it if I get it to work.
– manalang
Jun 26 '14 at 18:42
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