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What does f+++++++++ mean in rsync logs?
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I'm a couple of years late, but "t" vs "T" is explained in the man page: A t means the modification time is different and is being updated to the sender's value (requires --times). An alternate value of T means that the modification time will be set to the tran...
Using a piano keyboard as a computer keyboard [closed]
...r times it only has meaning combined with following strokes. (Think "good" vs. "good" followed by "bye"). Although they'll be heavily influenced by the school at which they studied, each stenographer will have their own "dictionary" of what strokes they use to mean what, a dictionary they will conti...
Relative imports in Python 2.7
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Script vs. Module
Here's an explanation. The short version is that there is a big difference between directly running a Python file, and importing that file from somewhere else. Just knowing what directory a file is in does not d...
Fundamental difference between Hashing and Encryption algorithms
...dress the points mentioned in the edited question.
1. When to use hashes vs encryptions
Hashing is useful if you want to send someone a file. But you are afraid that someone else might intercept the file and change it. So a
way that the recipient can make sure that it is the right file is if
you ...
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
... for the processor to parallelize different loop iterations.
The unsigned vs. uint64_t and other tweaks don't directly affect the problem. But they influence the register allocator which assigns the registers to the variables.
In your case, the speeds are a direct result of what is stuck to the (f...
What is the correct way of using C++11's range-based for?
...t's start differentiating between observing the elements in the container
vs. modifying them in place.
Observing the elements
Let's consider a simple example:
vector<int> v = {1, 3, 5, 7, 9};
for (auto x : v)
cout << x << ' ';
The above code prints the elements (ints) in...
How can I efficiently select a Standard Library container in C++11?
... a member function rather than the one from <algorithm>. As for O(1) vs O(log n), it does not affect semantics; I'll remove the "efficiently" from the example and replace it with "easily".
– Matthieu M.
May 22 '12 at 12:22
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Move capture in lambda
...es (myPointer in this case). Therefore the above code does not compile in VS2013. It woks fine in GCC 4.8 though.
– Alan
Dec 2 '15 at 18:07
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HTML5 Canvas Resize (Downscale) Image High Quality?
...be nice here, but i don't have one. )
Here's an example of canvas scale vs my pixel perfect scale on a 1/3 scale of a zombat.
Notice that the picture might get scaled in your Browser, and is .jpegized by S.O..
Yet we see that there's much less noise especially in the grass behind the wombat, and...
How can I determine whether a 2D Point is within a Polygon?
...ee floating point values per polygon side in memory. It's a typical memory vs computation time trade off.
Last but not least: If you may use 3D hardware to solve the problem, there is an interesting alternative. Just let the GPU do all the work for you. Create a painting surface that is off screen....