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Why java.util.Optional is not Serializable, how to serialize the object with such fields
...ften better to have whatever code sets that field apply some policy at the time it's set.
Sometimes people want to put Optional into collections, like List<Optional<X>> or Map<Key,Optional<Value>>. This too is usually a bad idea. It's often better to replace these usages of ...
How to get week number in Python?
...
datetime.date has a isocalendar() method, which returns a tuple containing the calendar week:
>>> import datetime
>>> datetime.date(2010, 6, 16).isocalendar()[1]
24
datetime.date.isocalendar() is an instance-...
Why is it bad style to `rescue Exception => e` in Ruby?
...al_cleanup
end
In the second case, critical cleanup will be called every time, whether or not an exception is thrown.
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Why should weights of Neural Networks be initialized to random numbers? [closed]
...'re "initializing" yourself to the same starting positions.
However, each time the helicopter drops you somewhere random on the mountain, you would take different directions and steps. So, there would be a better chance for you to reach to the lowest possible point.
This is what is meant by breaki...
Reverse / invert a dictionary mapping
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Fun Fact: Dictionaries will be ordered (by time of insertion) in Python 3.7 onwards.
– byxor
Jun 12 '18 at 20:18
...
How to remove/ignore :hover css style on touch devices
...ts whenever a touch is detected.
function watchForHover() {
// lastTouchTime is used for ignoring emulated mousemove events
let lastTouchTime = 0
function enableHover() {
if (new Date() - lastTouchTime < 500) return
document.body.classList.add('hasHover')
}
function disableHo...
How to set the focus for a particular field in a Bootstrap modal, once it appears
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It took a lot of time while I saw it should be "shown.bs..." instead of "show.bs...". Show doesnt worked for me. Actually their both are working and they are different events. Sorry ignore my first sentence.
– Vladyn
...
What is the difference between functional and non functional requirement? [closed]
...aintainability
Privacy
Portability
Quality
Reliability
Resilience
Response time
Robustness
Scalability
Security
Stability
Supportability
Testability
A more complete list is available at Wikipedia's entry for non-functional requirements.
Non-functional requirements are sometimes defined in terms o...
In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
...chat application for friends, but unsure about how to get information in a timely manner that is not as manual or as rudimentary as forcing a page refresh.
...
400 vs 422 response to POST of data
...ld now seem to be the best HTTP/1.1 status code for your use case.
At the time of your question (and my original answer), RFC 7231 was not a thing; at which point I objected to 400 Bad Request because RFC 2616 said (with emphasis mine):
The request could not be understood by the server due to m...