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How do SO_REUSEADDR and SO_REUSEPORT differ?
...A to 0.0.0.0:21 and then binding socketB to 192.168.0.1:21 will fail (with error EADDRINUSE), since 0.0.0.0 means "any local IP address", thus all local IP addresses are considered in use by this socket and this includes 192.168.0.1, too. With SO_REUSEADDR it will succeed, since 0.0.0.0 and 192.168....
C++ catch blocks - catch exception by value or reference? [duplicate]
...yException which inherits from CustomException and overrides items like an error code. If a MyException type was thrown your catch block would cause it to be converted to a CustomException instance which would cause the error code to change.
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Splitting templated C++ classes into .hpp/.cpp files--is it possible?
I am getting errors trying to compile a C++ template class which is split between a .hpp and .cpp file:
16 Answers
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What happens to an open file handle on Linux if the pointed file gets moved or deleted
...lug) then the file handle won't be valid any more and is likely to give IO/error on any operation. You still have to close it though. This is going to be true even if the device is plugged back in, as it's not sensible to keep a file open in this case.
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How to compare variables to undefined, if I don’t know whether they exist? [duplicate]
...ere.
}
Note that typeof always returns a string, and doesn't generate an error if the variable doesn't exist at all.
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IntelliJ not recognizing a particular file correctly, instead its stuck as a text file
...resolution; IntelliJ 13. When trying to create the file, I encountered the error 'Unable to parse template "Interface" Selected class file name mapped to not java'. Couldn't find that error message anywhere in Google, so posting it here in case someone else needs it.
– Knetic
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Apache shows PHP code instead of executing it
...member the extension but I think it's .so.
Also check in /var/log/apache2/error.log to see if you have any other errors.
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Is the NOLOCK (Sql Server hint) bad practice?
...r your mission critical web based application, a NOLOCK scan can cause 601 error which will terminate the query due to data movement as a result of lack of locking protection.
I suggest reading When Snapshot Isolation Helps and When It Hurts - the MSDN recommends using READ COMMITTED SNAPSHOT rathe...
Why can't overriding methods throw exceptions broader than the overridden method?
...s Sub4 extends Sub2 {
@Override
public void test() throws AssertionError {
// Unchecked Exception IS-A RuntimeException or IS-A Error
System.out.println("Sub4.test()");
}
}
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How does “do something OR DIE()” work in PHP?
...atement after OR. A block statement will fail syntax checking (e.g. actual error message could be Parse error: syntax error, unexpected '{' in ...)
– Scott Chu
May 21 '12 at 17:26
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