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What is scope/named_scope in rails?
...scopes can be very powerful tools to easy your work.
Check out this link: API Description
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Perform debounce in React.js
...r more details.
2018: try promise debouncing
We often want to debounce API calls to avoid flooding the backend with useless requests.
In 2018, working with callbacks (Lodash/Underscore) feels bad and error-prone to me. It's easy to encounter boilerplate and concurrency issues due to API calls r...
Find an element in DOM based on an attribute value
Can you please tell me if there is any DOM API which search for an element with given attribute name and attribute value:
7...
How to pass a user defined argument in scrapy spider
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Alternatively we can use ScrapyD which expose an API where we can pass the start_url and spider name. ScrapyD has api's to stop/start/status/list the spiders.
pip install scrapyd scrapyd-deploy
scrapyd
scrapyd-deploy local -p default
scrapyd-deploy will deploy the spider...
System.currentTimeMillis vs System.nanoTime
...n.com/bugdatabase/view_bug.do?bug_id=6519418 docs.oracle.com/javase/7/docs/api/java/lang/…
– user454322
Oct 9 '12 at 10:45
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How to check if an activity is the last one in the activity stack for an application?
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UPDATE (Jul 2015):
Since getRunningTasks() get deprecated, from API 21 it's better to follow raukodraug answer or Ed Burnette one (I would prefer second one).
There's possibility to check current tasks and their stack using ActivityManager.
So, to determine if an activity is the last o...
Android notification is not showing
...ce without this check, the notification won't show up, even if your device API>=26.
– Koushik Shom Choudhury
Jul 26 '19 at 15:25
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Argparse: Way to include default values in '--help'?
...multiple inheritance actually just worked, but unfortunately is not public API: stackoverflow.com/a/52025430/895245
– Ciro Santilli 郝海东冠状病六四事件法轮功
Aug 26 '18 at 10:41
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Android 4.3 Bluetooth Low Energy unstable
...ergy (testing on the Nexus 4). After getting started with the official BLE APIs in Android 4.3, I have noticed that after I connect a device for the first time I am rarely able to successfully connect to / communicate with that device or any other device again.
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View's getWidth() and getHeight() returns 0
...obalOnLayoutListener is deprecated, you should now do :
@SuppressLint("NewApi")
@SuppressWarnings("deprecation")
@Override
public void onGlobalLayout() {
// Ensure you call it only once :
if(android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
yourVie...