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Why should I declare a virtual destructor for an abstract class in C++?
... abstract classes that function as interfaces? Please provide some reasons and examples why.
7 Answers
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Round to at most 2 decimal places (only if necessary)
... @James Wow that's really weird- I'm working in the Chrome dev console and I'm noticing that 1.005 * 100 = 100.49999999999999. Math.round(100.49999999999999) evaluates to 100, whereas Math.round(100.5) evaluates to 101. IE9 does the same thing. This is due to floating point weirdness in javascri...
How to obtain the number of CPUs/cores in Linux from the command line?
... awk '{print $4}'
which should return (for example) 8 (whereas the command above would return 16)
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How to perform runtime type checking in Dart?
...
is and is! can be found in the Operators section of the Dart language tour.
– Curly
Jun 25 '19 at 16:02
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Docker: adding a file from a parent directory
...way to do the same trick in Docker Hub?
– Marcel Hernandez
Mar 25 '16 at 20:31
Not that I know of. You could push the ...
Remote connect to clearDB heroku database
...eroku using for example MySQL Query Browser. Where to get url, port, login and password?
12 Answers
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Is it considered acceptable to not call Dispose() on a TPL Task object?
... say:
Task.Dispose exists due to Task
potentially wrapping an event handle
used when waiting on the task to
complete, in the event the waiting
thread actually has to block (as
opposed to spinning or potentially
executing the task it's waiting on).
If all you're doing is using
co...
What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...erally stated as a problem in Object-Relational mapping (ORM) discussions, and I understand that it has something to do with having to make a lot of database queries for something that seems simple in the object world.
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How to Vertical align elements in a div?
I have a div with two images and an h1 . All of them need to be vertically aligned within the div, next to each other.
29 ...
Way to get all alphabetic chars in an array in PHP?
...t all alphabetic chars (A-Z) in an array in PHP so I can loop through them and display them?
14 Answers
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