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Heroku Postgres - terminate hung query (idle in transaction)
...sion of postgres are you using? (hint: select version()). Do you get any error messages when using pg_cancel_backend?
– tobixen
Jul 2 '12 at 12:21
...
Polymorphism in C++
...we'd need explicit casts, type traits and/or policy classes, some verbose, error-prone mess like:
template <typename Amount, typename Policy>
void f()
{
Amount x = Policy::thirteen;
x /= static_cast<Amount>(2);
std::cout << traits<Amount>::to_double(x) * 1.1;
}
...
C/C++ include header file order
..., or someone else, includes myclass.h but don't need string, you'll get an error that needs to be fixed either in the cpp or in the header itself. But I would be interested to know if that's what people think would work better in the long run... Why don't you post an answer with your proposal and we...
How to avoid long nesting of asynchronous functions in Node.js
...results to the next in the array. However, if any of the functions pass an error to the callback, the next function is not executed and the main callback is immediately called with the error.
Arguments
tasks - An array of functions to run, each function is passed a callback(err, result1, r...
Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
...3, you might get the following when trying to run that:
Updating RubyGems
ERROR: While executing gem ... (RuntimeError)
No gem names are allowed with the --system option
If you get that error, then update, so that it lets you specify the version, and then downgrade again:
gem update --syste...
Implementing Fast and Efficient Core Data Import on iOS 5
...'s own thread...
[masterManagedObjectContext performBlock:^{
NSError *error = nil;
BOOL saveSuccess = [masterManagedObjectContext save:&error];
// Handle error...
[notificationCenter removeObserver:self name:NSManagedObjectContextDidSaveNotification object:mas...
Retrieving a random item from ArrayList [duplicate]
...has never been declared as a variable, so it makes sense that it causes an error. But more importantly, you have code after a return statement and this will cause an unreachable code error.
share
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Extracting .jar file with command line
...
Ok, When I do that jar xf... command, I get the error: 'jar' is not recognized as an internal or external command,operable program or batch file. How do I fix this?
– Bobby C
Dec 10 '11 at 5:09
...
What does yield mean in PHP?
... 5.5. Trying to use yield before that version will result in various parse errors, depending on the code that follows the keyword. So if you get a parse error from that code, update your PHP.
Sources and further reading:
Official docs
The original RFC
kelunik's blog: An introduction to generators...
How to create an installer for a .net Windows Service using Visual Studio
...me contains invalid characters, is empty, or is too long (max length = 80) error when adding the Installer then right click in the grey area again, go to Properties and ensure that the Service Name value is set.
– wolfyuk
Jun 24 '15 at 8:46
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