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What is a mixin, and why are they useful?

...and from XML. You want the type to provide a "ToXML" method that returns a string containing an XML fragment with the data values of the type, and a "FromXML" that allows the type to reconstruct its data values from an XML fragment in a string. Again, this is a contrived example, so perhaps you use ...
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Remove directory which is not empty

...amed function to rimraf ;) /** * Remove directory recursively * @param {string} dir_path * @see https://stackoverflow.com/a/42505874/3027390 */ function rimraf(dir_path) { if (fs.existsSync(dir_path)) { fs.readdirSync(dir_path).forEach(function(entry) { var entry_path = ...
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Catching an exception while using a Python 'with' statement

... @ncoghlan But you can add extra try...except blocks inside with to be closer to the source of an exception that doesn't have anything to do with open(). – rbaleksandar May 19 '17 at 14:44 ...
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How to only get file name with Linux 'find'?

...' You can also use $PWD instead of . (on some systems it won't produce an extra dot in the front). If you still got an extra dot, alternatively you can run: find . -type f -execdir basename '{}' ';' -execdir utility [argument ...] ; The -execdir primary is identical to the -exec primary with the...
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Starting python debugger automatically on error

...tically start pdb when an error is encountered? I am not against having an extra import statement at the top of the file, nor a few extra lines of code. ...
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How can I use pointers in Java?

... public int value; } public class Binky() { public static void main(String[] args) { IntObj x; // Allocate the pointers x and y IntObj y; // (but not the IntObj pointees) x = new IntObj(); // Allocate an IntObj pointee // and set x to...
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How to get current timestamp in milliseconds since 1970 just the way Java gets

...e 767990892 which is round 8 days after the epoch ;-). int main(int argc, char* argv[]) { struct timeval tp; gettimeofday(&tp, NULL); long long mslong = (long long) tp.tv_sec * 1000L + tp.tv_usec / 1000; //get current timestamp in milliseconds std::cout << mslong << ...
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What's wrong with nullable columns in composite primary keys?

...s version the "ext" part of the tuple is NOT NULL but defaults to an empty string -- which is semantically (and practically) different from a NULL. A NULL is an unknown, whereas an empty string is a deliberate record of "something not being present". In other words, "empty" and "null" are different ...
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Pythonic way to find maximum value and its index in a list?

...r the slowest method, and it gives the wrong answer, if the array contains strings instead of floats or integers. – tommy.carstensen Sep 8 '13 at 23:47 10 ...
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Building a minimal plugin architecture in Python

...e too, although you can do a lot with just __import__, os.listdir and some string manipulation. share | improve this answer | follow | ...