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sqlalchemy unique across multiple columns
Let's say that I have a class that represents locations. Locations "belong" to customers. Locations are identified by a unicode 10 character code. The "location code" should be unique among the locations for a specific customer.
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Is there a javadoc tag for documenting generic type parameters?
I've been looking through the javadoc documentation on Sun's site, trying to find if there's a javadoc tag which can be used to document a class or method's generic type signature.
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Reorder bars in geom_bar ggplot2
I am trying to make a bar-plot where the plot is ordered from the miRNA with the highest value to the miRNA with the lowest. Why does my code not work?
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Maximum MIMEType Length when storing type in DB
What are people using as the length of a MIMEType field in their databases? The longest one we've seen so far is 72 bytes:
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How would one call std::forward on all arguments in a variadic function?
I was just writing a generic object factory and using the boost preprocessor meta-library to make a variadic template (using 2010 and it doesn't support them). My function uses rval references and std::forward to do perfect forwarding and it got me thinking...when C++0X comes out and I had a stand...
MongoDB aggregation framework match OR
Is it possible to do an OR in the $match?
2 Answers
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How to create index on JSON field in Postgres?
In PostgreSQL 9.3 Beta 2 (?), how do I create an index on a JSON field? I tried it using the -> operator used for hstore but got the following error:
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What's the difference between String(value) vs value.toString()
Javascript has lot's of "tricks" around types and type conversions so I'm wondering if these 2 methods are the same or if there is some corner case that makes them different?
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How can I apply styles to multiple classes at once?
I want two classes with different names to have the same property in CSS. I don't want to repeat the code.
5 Answers
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