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How to map calculated properties with JPA and Hibernate

...,issue_date) from document_storage)") private String myColumn; the errors i get when i run and display my view even before trying to display the column on mustache is something like this java.lang.NullPointerException at java.base/java.lang.String$CaseInsensitiveComparator.compare(Stri...
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How do I get currency exchange rates via an API such as Google Finance? [closed]

...testing/demo use. If you request more then it will return 400 and give you error: "The system has detected this request as an abuse of the free service. If you need more requests, please consider using the paid service. Please check currencyconverterapi.com/pricing for more information. Thank you." ...
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JPA : How to convert a native query result set to POJO class collection

... When I tried this I got an error that the class was not a known Entity. I ended up using this approach stackoverflow.com/questions/5024533/… instead of trying to use a native query. – FGreg Jan 30 '13 at 21:43 ...
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What does functools.wraps do?

...sue with this that was pretty hard to trace where Django was reporting the error "object has no attribute '__name__'". Unfortunately, for class-style decorators, I don't believe that @wrap will do the job. I have instead created a base decorator class like so: class DecBase(object): func = No...
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What is the difference between ? and Object in Java generics?

...me String"); All of the above method calls will result in a compile-time error because Java doesn't know what the Value type of the HashMap inside map is. You can still get a value out of the hash map. Although you "don't know the value's type," (because you don't know what type of hash map is i...
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Python: split a list based on a condition?

...where it's needed, thus reducing the likelihood for introducing typos/user error. Nice solution. Thanks! – cod3monk3y Nov 16 '13 at 21:08 3 ...
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Enums and Constants. Which to use when?

...you could have trace levels as an int with values 0, 1, 2 or as an enum as error, warning and info. Enum's also have the ability to be used as bitwise operators, i.e. FontStyle.Bold | FontStyle.Italic would give you bold and italic fonts. ...
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Why does this code segfault on 64-bit architecture but work fine on 32-bit?

... be int). With the cast, both would compile and the latter would result in errors when sizeof(int) != sizeof(void *). – user395760 Sep 25 '11 at 12:31 ...
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How can I access an internal class from an external assembly?

... string value = field.GetValue(tag); Use the power wisely. Don't forget error checking. :) share | improve this answer | follow | ...
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Plotting time in Python with Matplotlib

...ere no one has actually TRIED using a scatter plot - it doesn't work. Type Error - invalid type promotion. – dwanderson Oct 5 '16 at 16:21 1 ...