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Java executors: how to be notified, without blocking, when a task completes?
...@Zelphir It was a Callback interface that you declare; not from a library. Nowadays I'd probably just use Runnable, Consumer, or BiConsumer, depending on what I need to pass back from the task to the listener.
– erickson
Jan 29 '16 at 15:52
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How does JPA orphanRemoval=true differ from the ON DELETE CASCADE DML clause
...an removal is not affected by CascadeType. It's a complementary mechanism. Now, you are mistaking removal with persisting. Orphan removal is about deleting unreferenced associations while persisting is about saving new entities. You need to follow the links provided in the answer to get a better und...
Why does typeof NaN return 'number'?
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It looks like you are right, @Andy. Now that's a peculiarity.
– Alsciende
Sep 2 '15 at 9:55
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What is the best way to programmatically detect porn images? [closed]
...e positives are brown objects like sand and wood and of course it doesn't know the difference between "naughty" and "nice" flesh (like face shots).
Weakness with false negatives would be images without much exposed flesh (like leather bondage), painted or tattooed skin, B&W images, etc.
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Using PowerShell to write a file in UTF-8 without the BOM
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The proper way as of now is to use a solution recommended by @Roman Kuzmin in comments to @M. Dudley answer:
[IO.File]::WriteAllLines($filename, $content)
(I've also shortened it a bit by stripping unnecessary System namespace clarification - ...
What's the best way to do a backwards loop in C/C#/C++?
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Instead of doing
(sizeof a / sizeof *a)
Change your code so that it now does
(sizeof array_size(a))
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Soft keyboard open and close listener in an activity in Android
... press back then it closes keyboard & but didn't click on other views, now again I click on same edittext which already have focus then what will happen ?
– N Sharma
Sep 12 '14 at 10:17
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How to sort mongodb with pymongo
...ggregation pipeline is faster as compared to conventional .find().sort().
Now moving to the real explanation. There are two ways to perform sorting operations in MongoDB:
Using .find() and .sort().
Or using the aggregation pipeline.
As suggested by many .find().sort() is the simplest way to per...
Hide keyboard when scroll UITableView
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I've been doing iOS dev since for 3 years and I didn't know about this until now... unreal.
– Jacob King
Oct 28 '16 at 10:37
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How to check if a variable is set in Bash?
How do I know if a variable is set in Bash?
33 Answers
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