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PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate
I have a JPA-persisted object model that contains a many-to-one relationship: an Account has many Transactions . A Transaction has one Account .
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Kill process by name?
I'm trying to kill a process (specifically iChat). On the command line, I use these commands:
15 Answers
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Difference between fmt.Println() and println() in Go
As illustrated below, both fmt.Println() and println() give same output in Go: Hello world!
5 Answers
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character showing up in files. How to remove them?
I am doing compressing of JavaScript files and the compressor is complaining that my files have  character in them.
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How can I maximize the editor pane in IntelliJ IDEA?
In Eclipse, I can type Ctrl + M or click the maximize icon in the editor pane to make the editor pane take up the entire Eclipse window, and then again to restore the pane back to its previous size exposing the other panes.
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URLWithString: returns nil
it may be very easy, but I don't seems to find out why is URLWithString: returning nil here.
7 Answers
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Right query to get the current number of connections in a PostgreSQL DB
Which of the following two is more accurate?
6 Answers
6
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How to implement an STL-style iterator and avoid common pitfalls?
I made a collection for which I want to provide an STL-style, random-access iterator. I was searching around for an example implementation of an iterator but I didn't find any. I know about the need for const overloads of [] and * operators. What are the requirements for an iterator to be "STL-s...
How do I use the CONCAT function in SQL Server 2008 R2?
I was looking for a CONCAT function in SQL Server 2008 R2. I found the link for this function . But when I use this function, it gives the following error:
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Configuring Git over SSH to login once
I have cloned my git repository over ssh. So, each time I communicate with the origin master by pushing or pulling, I have to reenter my password. How can I configure git so that I do not need to enter my password multiple times?
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