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Optimise PostgreSQL for fast testing
I am switching to PostgreSQL from SQLite for a typical Rails application.
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How do I handle the window close event in Tkinter?
How do I handle the window close event (user clicking the 'X' button) in a Python Tkinter program?
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How do I horizontally center a span element inside a div
I am trying to center the two links 'view website' and 'view project' inside the surrounding div. Can someone point out what I need to do to make this work?
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boost::flat_map and its performance compared to map and unordered_map
It is common knowledge in programming that memory locality improves performance a lot due to cache hits. I recently found out about boost::flat_map which is a vector based implementation of a map. It doesn't seem to be nearly as popular as your typical map / unordered_map so I haven't been able ...
Multi-gradient shapes
I'd like to create a shape that's like the following image:
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Spring DAO vs Spring ORM vs Spring JDBC
I was going through data access technologies supported by Spring, and I noticed that it mentions multiple options and I am not sure about the difference among them:
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Can you explain the HttpURLConnection connection process?
I am using HTTPURLConnection to connect to a web service. I know how to use HTTPURLConnection but I want to understand how it works. Basically, I want to know the following:
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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
After conducting some experiments on square matrices of different sizes, a pattern came up. Invariably, transposing a matrix of size 2^n is slower than transposing one of size 2^n+1 . For small values of n , the difference is not major.
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Rule-of-Three becomes Rule-of-Five with C++11?
So, after watching this wonderful lecture on rvalue references, I thought that every class would benefit of such a "move constructor", template<class T> MyClass(T&& other) edit and of course a "move assignment operator", template<class T> MyClass& operator=(T&&...
Why does base64 encoding require padding if the input length is not divisible by 3?
What is the purpose of padding in base64 encoding. The following is the extract from wikipedia:
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