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What is a smart pointer and when should I use one?
...ue_ptr, std::shared_ptr and std::weak_ptr.
There was also std::auto_ptr. It was very much like a scoped pointer, except that it also had the "special" dangerous ability to be copied — which also unexpectedly transfers ownership.
It was deprecated in C++11 and removed in C++17, so you shouldn't u...
Difference between numpy.array shape (R, 1) and (R,)
...turn (R,) . This will make matrix multiplication more tedious since explicit reshape is required. For example, given a matrix M , if we want to do numpy.dot(M[:,0], numpy.ones((1, R))) where R is the number of rows (of course, the same issue also occurs column-wise). We will get matrices ar...
g++ undefined reference to typeinfo
I just ran across the following error (and found the solution online, but it's not present in Stack Overflow):
17 Answers
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What is the difference between FragmentPagerAdapter and FragmentStatePagerAdapter?
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Like the docs say, think about it this way. If you were to do an application like a book reader, you will not want to load all the fragments into memory at once. You would like to load and destroy Fragments as the user reads. In this case you will use Frag...
What is the difference between 'git pull' and 'git fetch'?
What are the differences between git pull and git fetch ?
36 Answers
36
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Why is Go so slow (compared to Java)?
...re designed to run fast themselves and produce code that's OK (there is a bit of optimisation). gccgo uses GCC's existing optimisation passes, and might provide a more pointful comparison with C, but gccgo isn't feature-complete yet.
Benchmark figures are almost entirely about quality of implementa...
Stop caching for PHP 5.5.3 in MAMP
Installed MAMP on a new Macbook with PHP 5.5.3.
9 Answers
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When is TCP option SO_LINGER (0) required?
...e option is used. The customer complains about RST as response to FIN from its side on connection close from its side.
7 An...
“tag already exists in the remote" error after recreating the git tag
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Edit, 24 Nov 2016: this answer is apparently popular, so I am adding a note here. If you replace a tag on a central server, anyone who has the old tag—any clone of that central-server repository that already has the tag—co...
Simple argparse example wanted: 1 argument, 3 results
...to grasp right now. I don't need to do math on the command line or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this, if B do that, if none of the above show help and quit" .
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