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A good example for boost::algorithm::join
I recently wanted to use boost::algorithm::join but I couldn't find any usage examples and I didn't want to invest a lot of time learning the Boost Range library just to use this one function.
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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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Is it .yaml or .yml?
According to yaml.org , the official file extension is .yaml .
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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?
...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 standar...
What is float in Java?
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In Java, when you type a decimal number as 3.6, its interpreted as a double. double is a 64-bit precision IEEE 754 floating point, while floatis a 32-bit precision IEEE 754 floating point. As a float is less precise than a double, the conversion cannot ...
How to create index on JSON field in Postgres?
...ublishers(id INT, info JSON);
CREATE INDEX ON publishers((info->>'name'));
As stated in the comments, the subtle difference here is ->> instead of ->. The former one returns the value as text, the latter as a JSON object.
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What is RPC framework and Apache Thrift?
...Thrift for a University project. As this tutorial says, it is an RPC framework, and it was the only document I could find for Thrift other than their documentation .
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Remove data.frame row names when using xtable
OK, I admit this one is a bit uptight (read: "stupid"), and I assume it's quite easy too. I'm writing a report and I want to use xtable package for LaTeX table generation (note that memisc package does the job, but say I want to do this solely with xtable ).
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Coredata Error “data: ”
I try to pull out data from CoreData with the following code
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