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Why is there “data” and “newtype” in Haskell? [duplicate]
It seems that a newtype definition is just a data definition that obeys some restrictions (e.g., only one constructor), and that due to these restrictions the runtime system can handle newtype s more efficiently. And the handling of pattern matching for undefined values is slightly different.
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How should I log while using multiprocessing in Python?
Right now I have a central module in a framework that spawns multiple processes using the Python 2.6 multiprocessing module . Because it uses multiprocessing , there is module-level multiprocessing-aware log, LOG = multiprocessing.get_logger() . Per the docs , this logger has process-shared lock...
Add st, nd, rd and th (ordinal) suffix to a number
I would like to dynamically generate a string of text based on a current day. So, for example, if it is day 1 then I would like my code to generate = "Its the 1* st *".
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Using os.walk() to recursively traverse directories in Python
I want to navigate from the root directory to all other directories within and print the same.
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Pointer to class data member “::*”
I came across this strange code snippet which compiles fine:
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Javascript Shorthand for getElementById
Is there any shorthand for the JavaScript document.getElementById? Or is there any way I can define one? It gets repetitive retyping that over and over .
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In Python, how do I split a string and keep the separators?
Here's the simplest way to explain this. Here's what I'm using:
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Why does C++11's lambda require “mutable” keyword for capture-by-value, by default?
Short example:
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Javascript heredoc
I need something like heredoc in JavaScript. Do you have any ideas for this? I need cross-browser functionality.
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Can I implement an autonomous `self` member type in C++?
C++ lacks the equivalent of PHP's self keyword , which evaluates to the type of the enclosing class.
13 Answers
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