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What character encoding should I use for a HTTP header?
...r LF or HT? Can header values contain the characters CR, LF, and HT in any order and amount?)
– Pacerier
Jul 29 '16 at 13:17
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SignalR - Sending a message to a specific user using (IUserIdProvider) *NEW 2.0.0*
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This is how use SignarR in order to target a specific user (without using any provider):
private static ConcurrentDictionary<string, string> clients = new ConcurrentDictionary<string, string>();
public string Login(string username)
{
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UICollectionView Set number of columns
...h Swift 5 and iOS 12.3, you can use one the 4 following implementations in order to set the number of items per row in your UICollectionView while managing insets and size changes (including rotation).
#1. Subclassing UICollectionViewFlowLayout and using UICollectionViewFlowLayout's itemSize prop...
Adding a regression line on a ggplot
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And so you never worry about ordering of your formulas or just adding a +0 you can use names. data.lm$coefficients[['(Intercept)']] and data.lm$coefficients[['DepDelay']].
– Ufos
May 14 '19 at 16:56
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Why do some websites add “Slugs” to the end of URLs? [closed]
...low URLs are bad in the sense that they introduce an additional segment in order to feature the slug, which is a violation of the idea that each segment should represent descending a resource hierarchy.
Example for boost shared_mutex (multiple reads/one write)?
... the number of readers. Let each reader take one count of the semaphore in order to read, that way they can all read at the same time. Then let the writer take ALL the semaphore counts prior to writing. This causes the writer to wait for all reads to finish and then block out reads while writing.
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NumPy: function for simultaneous max() and min()
... as the fastest C-compiled library (at least we are talking about the same order of magnitude), which is impressive taking into account that we wrote nothing else than pure Python code, don't you agree? ^^
– Peque
Mar 14 '17 at 8:26
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Multiple variables in a 'with' statement?
... differs from the standard nested with blocks. The managers are created in order before entering the with blocks: m1, m2, m3 = A(), B(), C() If B() or C() fails with exception, then your only hope of properly finalizing A() is the garbage collector.
– Rafał Dowgird
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Macro vs Function in C
...ator though... overlooked that... But it might still be less readable.)
Order of Operations: (courtesy of @ouah)
#define min(a,b) (a < b ? a : b)
min(x & 0xFF, 42)
gets expanded to:
(x & 0xFF < 42 ? x & 0xFF : 42)
But & has lower precedence than <. So 0xFF < 42 ...
Why is Linux called a monolithic kernel?
...onolithic sub-systems need to synchronize multiple values at one time. In order to do this, they must use locks and will suffer from Amdahl's law when extended to parallel architectures. The counter is that microkernels result in lots of IPC messages.
A major development is the use of lock-free p...