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What is the meaning of the CascadeType.ALL for a @ManyToOne JPA association
I think I misunderstood the meaning of cascading in the context of a @ManyToOne relationship.
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JPanel Padding in Java
I have a formatting question for my Java swing application. It should be fairly straightforward, but I am having difficulty finding any aid (Every topic seems to be regarding removing any default padding in JPanel). The text in my various JPanels hug the sides and top, touching the colored borders...
Capturing Ctrl-c in ruby
I was passed a long running legacy ruby program, which has numerous occurrences of
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Conditionally Remove Dataframe Rows with R [duplicate]
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Is file append atomic in UNIX?
In general, what can we take for granted when we append to a file in UNIX from multiple processes? Is it possible to lose data (one process overwriting the other's changes)? Is it possible for data to get mangled? (For example, each process is appending one line per append to a log file, is it po...
Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
when I tried to update my applcation with new version that has same signature as previous one, shows above error.
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How to animate the change of image in an UIImageView?
I have an UIImageView with an image. Now I have a completely new image (graphic file), and want to display that in this UIImageView . If I just set
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Write string to text file and ensure it always overwrites the existing content.
I have a string with a C# program that I want to write to a file and always overwrite the existing content. If the file isn't there, the program should create a new file instead of throwing an exception.
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Static fields on a null reference in Java
static members ( static fields or static methods) in Java are associated with their respective class rather than the objects of this class. The following code attempts to access a static field on a null reference.
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What are the Ruby Gotchas a newbie should be warned about? [closed]
I have recently learned the Ruby programming language, and all in all it is a good language. But I was quite surprised to see that it was not as simple as I had expected. More precisely, the "rule of least-surprise" did not seem very respected to me (of course this is quite subjective). For examp...