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PostgreSQL function for last inserted ID
...an id column created with the SERIAL pseudo-type. To avoid relying on this and to feel more clean, you can use instead pg_get_serial_sequence:
INSERT INTO persons (lastname,firstname) VALUES ('Smith', 'John');
SELECT currval(pg_get_serial_sequence('persons','id'));
Caveat: currval() only work...
Android and in TextView
...review in XML) nor by setting them in Java with setText(). Tried both with Android 4.1 and 4.2
– Stephan Wiesner
Feb 20 '13 at 6:08
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Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
... to be recursive. That means the same thread can lock the same mutex twice and won't deadlock. Of course it also needs to unlock it twice, otherwise no other thread can obtain the mutex. Not all systems supporting pthreads also support recursive mutexes, but if they want to be POSIX conform, they h...
How do I hide .class files from the Open Resource dialog in Eclipse?
...to have edit any working sets. I just want a way to, across all workspaces and projects, prevent .class files from ever showing in the Open Resource Dialog. Is there a way to do this?
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Generator Expressions vs. List Comprehension
When should you use generator expressions and when should you use list comprehensions in Python?
9 Answers
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MySQL - Using COUNT(*) in the WHERE clause
...he clause that They Don't Bother To Teach Properly on sql courses or books and knowing about it generally the sign that the coder has progressed beyond novice level.
– Cruachan
Nov 19 '08 at 12:59
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What is a good choice of database for a small .NET application? [closed]
I'm developing a small application with C# in .NET and I want to have a small light weight database which does not use much resources.
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Benefits of prototypal inheritance over classical?
So I finally stopped dragging my feet all these years and decided to learn JavaScript "properly". One of the most head-scratching elements of the languages design is it's implementation of inheritance. Having experience in Ruby, I was really happy to see closures and dynamic typing; but for the li...
What's the difference between std::move and std::forward
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std::move takes an object and allows you to treat it as a temporary (an rvalue). Although it isn't a semantic requirement, typically a function accepting a reference to an rvalue will invalidate it. When you see std::move, it indicates that the value ...
How to convert a char array back to a string?
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No, that solution is absolutely correct and very minimal.
Note however, that this is a very unusual situation: Because String is handled specially in Java, even "foo" is actually a String. So the need for splitting a String into individual chars and join them bac...