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What are the differences between the threading and multiprocessing modules?

...nd the multiprocessing modules in Python to run certain operations in parallel and speed up my code. 6 Answers ...
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How to implement a queue with three stacks?

...r Sedgewick have confirmed they are not aware of a 3-stack solution within all the constraints of the original question DETAILS There are two implementations behind this link: http://www.eecs.usma.edu/webs/people/okasaki/jfp95/index.html One of them is O(1) with three stacks BUT it uses lazy exe...
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BaseException.message deprecated in Python 2.6

...of the exception hierarchy. Provides an 'args' attribute that contains all arguments passed to the constructor. Suggested practice, though, is that only a single string argument be passed to the constructor.""" __str__ and __repr__ are already implemented in a meaningful way, especiall...
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Using variables inside a bash heredoc

... the lines in the here-document are not expanded. If word is unquoted, all lines of the here-document are subjected to parameter expansion, command substitution, and arithmetic expansion. [...] If you change your first example to use <<EOF instead of << "EOF" you'll find that i...
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How can I correctly prefix a word with “a” and “an”?

...uick filter program that spits out only article text (the download is generally in XML format, along with non-article metadata too). Find all instances of a(n).... and make an index on the following word and all of its prefixes (you can use a simple suffixtrie for this). This should be case sensitiv...
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How can I add reflection to a C++ application?

...rate the data about each field(plus the field itself). This macro will be called like this: REFLECTABLE ( (const char *) name, (int) age ) So using Boost.PP we iterate over each argument and generate the data like this: // A helper metafunction for adding const to a type template<clas...
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Static class initializer in PHP

I have an helper class with some static functions. All the functions in the class require a ‘heavy’ initialization function to run once (as if it were a constructor). ...
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What is time_t ultimately a typedef to?

...IX-compliant systems implement the time_t type as a signed integer (typically 32 or 64 bits wide) which represents the number of seconds since the start of the Unix epoch: midnight UTC of January 1, 1970 (not counting leap seconds). Some systems correctly handle negative time values, w...
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In a django model custom save() method, how should you identify a new object?

... Not all models have an id attribute, i.e. a model extending another through a models.OneToOneField(OtherModel, primary_key=True). I think you need to use self.pk – AJP Apr 9 '13 at 10:21 ...
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Rename Files and Directories (Add Prefix)

I would like to add prefix on all folders and directories. 10 Answers 10 ...