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@Basic(optional = false) vs @Column(nullable = false) in JPA
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Gordon Yorke (EclipseLink Architecture Committee Member, TopLink Core Technical Lead, JPA 2.0 Expert Group Member) wrote a good answer on this topic so instead of paraphrasing him, I'll quote his answer:
The difference bet...
How do I edit an incorrect commit message in git ( that I've pushed )?
I want to modify a commit message deeper in history and I've pushed many new commits.
7 Answers
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CSS Display an Image Resized and Cropped
...answered Jan 29 '09 at 20:42
roborourkeroborourke
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What is the best way to call a script from another script?
....py executed as script
# do something
some_func()
service.py
import test1
def service_func():
print 'service func'
if __name__ == '__main__':
# service.py executed as script
# do something
service_func()
test1.some_func()
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How should I unit test threaded code?
...ike to ask how people have gone about testing code that relies on threads for successful execution, or just how people have gone about testing those kinds of issues that only show up when two threads interact in a given manner?
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When does Java's Thread.sleep throw InterruptedException?
...hen does Java's Thread.sleep throw InterruptedException? Is it safe to ignore it? I am not doing any multithreading. I just want to wait for a few seconds before retrying some operation.
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Converting HTML files to PDF [closed]
...enerate a PDF file from an exisiting (X)HTML-document. The input files (reports) use a rather simple, table-based layout, so support for really fancy JavaScript/CSS stuff is probably not needed.
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Switch branch names in git
There may be more than one way to ask this question, so here's a desciption of the problem. I was working on master and committed some stuff and then decided I wanted to put that work on hold. I backed up a few commits and then branched from before I started my crap work. Practically this works fine...
How do I obtain crash-data from my Android application?
...h data (stack traces at least) from my Android application? At least when working on my own device being retrieved by cable, but ideally from any instance of my application running on the wild so that I can improve it and make it more solid.
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Check if the number is integer
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Another alternative is to check the fractional part:
x%%1==0
or, if you want to check within a certain tolerance:
min(abs(c(x%%1, x%%1-1))) < tol
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