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Calculate the median of a billion numbers

...bably too late if this had been an interview, but never mind: Machine 1 shall be called the "control machine", and for the sake of argument either it starts with all the data, and sends it in equal parcels to the other 99 machines, or else the data starts evenly distributed between the machines, an...
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MySQL OPTIMIZE all tables?

...ZE TABLE command which can be used to reclaim unused space in a MySQL install. Is there a way (built-in command or common stored procedure) to run this optimization for every table in the database and/or server install, or is this something you'd have to script up yourself? ...
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How to change the foreign key referential action? (behavior)

... means that if you delete a row from the parent table (Users in this case) all referencing rows from the child table (UserDetails) are also deleted. – edruid Jan 11 '18 at 14:20 1 ...
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How to get one value at a time from a generator function in Python?

... In Python <= 2.5, use gen.next(). This will work for all Python 2.x versions, but not Python 3.x In Python >= 2.6, use next(gen). This is a built in function, and is clearer. It will also work in Python 3. Both of these end up calling a specially named function, next(), wh...
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How to dynamic new Anonymous Class?

... All you're doing is saying that dynamic properties are not identical to strongly-typed properties. This is trivially true. – Steven Sudit Sep 18 '10 at 2:31 ...
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SQLite add Primary Key

... pkName ON tableName(columnName)) when DB frameworks like MS SQL's SMO actually make you add a PK after the table has been created! – SteveCinq Aug 31 '17 at 18:06 ...
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How to convert a SVG to a PNG with ImageMagick?

... to convert it into a PNG, then I get a 16x16 pixel PNG which is way too small: 18 Answers ...
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Traversing text in Insert mode

...iliar with it. The right way is to press Esc, go where you want to do a small correction, fix it, go back and keep editing. It is effective because Vim has much more movements than usual character forward/backward/up/down. After you learn more of them, this will happen to be more productive. Her...
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How to play audio?

... has a audio format compatibility table. new Audio() can play WAV files in all browsers except Internet Explorer. – Rory O'Kane Mar 15 '15 at 14:18 311 ...
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Does Go have “if x in” construct similar to Python?

...ion without separate methods for every single type – Allen May 13 '15 at 4:33 29 It could be done...