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Does delete on a pointer to a subclass call the base class destructor?
...new C;
}
Allocating an instance of B and then deleting is clean, because what B allocates internally will also be deleted in the destructor.
But instances of class C will leak memory, because it allocates an instance of A which it does not release (in this case C does not even have a destructor)....
Callback after all asynchronous forEach callbacks are completed
...vide this nicety (oh if it would) but there are several ways to accomplish what you want:
Using a simple counter
function callback () { console.log('all done'); }
var itemsProcessed = 0;
[1, 2, 3].forEach((item, index, array) => {
asyncFunction(item, () => {
itemsProcessed++;
if(...
quick random row selection in Postgres
... or anyone expand this answer with an answer to why I need to use floor()? What advantage does it offer?
– ADTC
Jul 21 '14 at 11:00
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Is there a good Valgrind substitute for Windows?
...o gperftools (formerly Google PerfTools). It's not a valgrind replacement (what is really) but it has a new malloc, cpu profiler, heap profiler and checker. Worth a look as it's support on Linux and Windows (inc Mingw) and other unices.
– alexr
Feb 13 '12 at 17...
Can I set max_retries for requests.request?
...nteger or a Retry() object; the latter gives you fine-grained control over what kinds of failures are retried (an integer value is turned into a Retry() instance which only handles connection failures; errors after a connection is made are by default not handled as these could lead to side-effects)....
Where does Vagrant download its .box files to?
What happens to the .box file after the following command is executed?
8 Answers
8
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Python list subtraction operation
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@AlfredZien what he said
– RetroCode
Sep 15 '16 at 16:04
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Input type=password, don't let browser remember the password
...
+1 for "don't annoy your users". That's exactly what this kind of feature does. Just like sites that force off caching so the back button clears the form. EXTREMELY irritating.
– cletus
Jan 22 '09 at 7:29
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how to change uiviewcontroller title independent of tabbar item title
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What is topItem?
– imike
Feb 5 '19 at 6:26
2
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How to create a numpy array of all True or all False?
...s the array is empty, the memory is not written and there is no guarantee, what your values will be, e.g.
>>> print(np.empty((4,4), dtype=bool))
[[ True True True True]
[ True True True True]
[ True True True True]
[ True True False False]]
...