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Why does pthread_cond_wait have spurious wakeups?
...gt;situations where a wait times out just as a signal arrives?
> You know, I wonder if the designers of pthreads used logic like this:
> users of condition variables have to check the condition on exit anyway,
> so we will not be placing any additional burden on them if we allow
> s...
Why can't the C# constructor infer type?
...d.
This feature has been on the list of possible features for a long time now. It's never been anywhere near high enough on the list to actually get implemented.
UPDATE March 2015
The proposed feature made it close enough to the top of the list for C# 6 to be specified and designed, but was then ...
What is hashCode used for? Is it unique?
...
The quote from the MSDN is now out-of-date. The MSDN is now not as explicit about the hash code not being unique.
– user34660
Dec 26 '17 at 22:11
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Difference between attr_accessor and attr_accessible
...ode to (quickly) create setter and getter methods in a Class. That's all.
Now, what is missing as an explanation is that when you create somehow a link between a (Rails) model with a database table, you NEVER, NEVER, NEVER need attr_accessor in your model to create setters and getters in order to b...
Why do some websites add “Slugs” to the end of URLs? [closed]
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The slugs make the URL more user-friendly and you know what to expect when you click a link. Search engines such as Google, rank the pages higher if the searchword is in the URL.
share
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$on and $broadcast in angular
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One thing you should know is $ prefix refers to an Angular Method, $$ prefixes refers to angular methods that you should avoid using.
below is an example template and its controllers, we'll explore how $broadcast/$on can help us achieve what we w...
Is there a REAL performance difference between INT and VARCHAR primary keys?
... your database? And pretend that SU never exists? And all references to SU now points to Russia?
– Dainius
Aug 23 '12 at 8:01
6
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Most efficient way to store thousand telephone numbers
...ounts and each count is at most 1000. If we omit the last one (because we know it is 1000 anyway), we can store all of these numbers in a contiguous block of (2^m - 1) * 10 bits. (10 bits is enough for storing a number less than 1024.)
The last k bits of all (reduced) phone numbers are stored conti...
Why does the C# compiler not fault code where a static method calls an instance method?
...w answer (and this entire question) has mostly only historical interest by now!
(Pre C# 7.3:)
For some reason, overload resolution always finds the best match before checking for static versus non-static. Please try this code with all static types:
class SillyStuff
{
static void SameName(obje...
SQLAlchemy: What's the difference between flush() and commit()?
... # been flushed yet.
s2.flush() # Now, Foo('B') is in the same state as
# Foo('A') was above.
print 3, s2.query(Foo).all()
s2.rollback() # Foo('B') has not been committed, and rolling
...