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NOT IN vs NOT EXISTS
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I always default to NOT EXISTS.
The execution plans may be the same at the moment but if either column is altered in the future to allow NULLs the NOT IN version will need to do more work (even if no NULLs are actually present in the data) and the semantics of NOT IN if ...
Pythonic way to print list items
I would like to know if there is a better way to print all objects in a Python list than this :
11 Answers
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How can I style even and odd elements?
Is it possible to use CSS pseudo-classes to select even and odd instances of list items?
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Can't install Ruby under Lion with RVM – GCC issues
Most questions regarding this problem are due to missing Xcode; I have Xcode 4.2 installed.
16 Answers
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Why don't self-closing script elements work?
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XHTML 1 specification says:
С.3. Element Minimization and Empty Element Content
Given an empty instance of an element whose content model is not EMPTY (for example, an empty title or paragraph) do not use the minimized form (e.g...
What do hjust and vjust do when making a plot using ggplot?
Every time I make a plot using ggplot, I spend a little while trying different values for hjust and vjust in a line like
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Multiprocessing - Pipe vs Queue
What are the fundamental differences between queues and pipes in Python's multiprocessing package ?
2 Answers
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How to get innerHTML of DOMNode?
What function do you use to get innerHTML of a given DOMNode in the PHP DOM implementation? Can someone give reliable solution?
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Replacing all non-alphanumeric characters with empty strings
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Use [^A-Za-z0-9].
Note: removed the space since that is not typically considered alphanumeric.
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Create a pointer to two-dimensional array
I need a pointer to a static 2-dimensional array. How is this done?
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