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Generic method multiple (OR) type constraint
...
That is not possible. You can, however, define overloads for specific types:
public void test(string a, string arg);
public void test(string a, Exception arg);
If those are part of a generic class, they will be preferred over the generic version o...
Which iomanip manipulators are 'sticky'?
... Exactly! and the only reason that setw appears to behave differently is because there are requirements on formatted output operations to explicitly .width(0) the output stream.
The following is the discussion that lead to the above conclusion:
Looking at the code the following manipulators ret...
Why C# fails to compare two object types with each other but VB doesn't?
...hose are distinct references.
EDIT: With types which overload the ==, you can get different behaviour - but that's based on the compile-time type of the expressions. For example, string provides ==(string, string):
string x = new string("foo".ToCharArray());
string y = new string("foo".ToCharArray...
Performance of foreach, array_map with lambda and array_map with static function
...es', $numbers);
}
foreach (array('Foreach', 'MapClosure', 'MapNamed') as $callback) {
list($delay,) = lap("use$callback");
echo "$callback: $delay\n";
}
I get pretty consistent results with 1M numbers across a dozen attempts:
Foreach: 0.7 sec
Map on closure: 3.4 sec
Map on function name:...
Trusting all certificates using HttpClient over HTTPS
...ade some headway, but I've run into new issues. As with my last problem, I can't seem to find an example anywhere that works for me. Basically, I want my client to accept any certificate (because I'm only ever pointing to one server) but I keep getting a javax.net.ssl.SSLException: Not trusted serv...
ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...at's why I'm asking - what's the point? To make the code look smarter? ;) Cause for me counting stuff using decimal numbers is A LOT more intuitive (we have 10 fingers after all - at least most of us), so declaring a number of something using hexadecimals seems like an unnecessary code obfuscation....
Update relationships when saving changes of EF4 POCO objects
...re not tracked at all.
Problem description
Based on above description we can clearly state that EF is more suitable for connected scenarios where entity is always attached to context - typical for WinForm application. Web applications requires disconnected scenario where context is closed after re...
When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
...eady read the question and answers to What design decisions would favour Scala's Actors instead of JMS? .
3 Answers
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Is cout synchronized/thread-safe?
...Of particular interest here is the fact that cout is buffered. Even if the calls to write (or whatever it is that accomplishes that effect in that particular implementation) are guaranteed to be mutually exclusive, the buffer might be shared by the different threads. This will quickly lead to corrup...
Multiple INSERT statements vs. single INSERT with multiple VALUES
...-+----------------+-------------+---------------+---------------+
| Rows | CachedPlanSize | CompileTime | CompileMemory | Duration/Rows |
+------+----------------+-------------+---------------+---------------+
| 245 | 528 | 41 | 2400 | 0.167346939 |
| 246 | ...