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PSQLException: current transaction is aborted, commands ignored until end of transaction block
...n't enough, THEN you used that same connection, using the SAME TRANSACTION to run another query. The exception gets thrown on the second, correctly formed query because you are using a broken transaction to do additional work. PostgreSQL by default stops you from doing this.
I'm using: PostgreSQL ...
How to use my view helpers in my ActionMailer views?
I want to use the methods I defined in app/helpers/annotations_helper.rb in my ReportMailer views ( app/views/report_mailer/usage_report.text.html.erb ). How do I do this?
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How to combine paths in Java?
...e a Java equivalent for System.IO.Path.Combine() in C#/.NET? Or any code to accomplish this?
11 Answers
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How to create a subdirectory for a project QtCreator?
I would like to divide my Qt project into several directories because it is growing pretty large. However, when I click on browse in QtCreator, there is no 'Add directory' and no such thing in 'Add new'. Can this be done somehow?
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How can I use PHP to dynamically publish an ical file to be read by Google Calendar?
Any Google search on PHP ical just brings up phpicalendar and how to parse or read IN ical files. I just want to write a PHP file that pulls events from my database and writes them out in ical format.
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How do I move an existing window to a new tab?
Is there a way to take an existing window (split) and put it into a new tab?
4 Answers
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Keyboard shortcuts in WPF
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One way is to add your shortcut keys to the commands themselves them as InputGestures. Commands are implemented as RoutedCommands.
This enables the shortcut keys to work even if they're not hooked up to any controls. And since menu item...
Build Android Studio app via command line
I want to build an Android Studio app (the Gradle build system), but I want to do this via the command line.
12 Answers
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Is the practice of returning a C++ reference variable evil?
...ll sorts of evil. The stack-allocated i will go away and you are referring to nothing. This is also evil:
int& getInt() {
int* i = new int;
return *i; // DON'T DO THIS.
}
Because now the client has to eventually do the strange:
int& myInt = getInt(); // note the &, we cannot...
Why does Java allow us to compile a class with a name different than the file name?
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The rationale is to allow more than one top-level class per .java file.
Many classes—such as event listeners—are of local use only and the earliest versions of Java did not support nested classes. Without this relaxation of the "filename...