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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?

... Functions can be called in either order **/ return 0; } share | improve this answer | follow | ...
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Compare if BigDecimal is greater than zero

... It's as simple as: if (value.compareTo(BigDecimal.ZERO) > 0) The documentation for compareTo actually specifies that it will return -1, 0 or 1, but the more general Comparable<T>.compareTo method only guarantees less than zero, zero, or greater than zero for the appropriate ...
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What's the algorithm to calculate aspect ratio?

... 203 I gather you're looking for an usable aspect ratio integer:integer solution like 16:9 rather th...
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Principal component analysis in Python

... | edited Sep 3 '10 at 11:40 nikow 19.6k66 gold badges4242 silver badges6969 bronze badges answe...
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Random float number generation

...need to employ a more advanced method. This will generate a number from 0.0 to 1.0, inclusive. float r = static_cast <float> (rand()) / static_cast <float> (RAND_MAX); This will generate a number from 0.0 to some arbitrary float, X: float r2 = static_cast <float> (rand()) / ...
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In Typescript, How to check if a string is Numeric

... edited Feb 13 '18 at 14:19 k0pernikus 35.4k4040 gold badges154154 silver badges266266 bronze badges answered May 3 '14 at 6:09 ...
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How to run cron job every 2 hours

... Just do: 0 */2 * * * /home/username/test.sh The 0 at the beginning means to run at the 0th minute. (If it were an *, the script would run every minute during every second hour.) Don't forget, you can check syslog to see if it eve...
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Seeding the random number generator in Javascript

...| edited May 23 '17 at 12:02 Community♦ 111 silver badge answered Feb 6 '09 at 17:42 ...
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List comprehension in Ruby

...1, 2, 3, 4, 5, 6] new_array = some_array.comprehend {|x| x * 3 if x % 2 == 0} puts new_array Prints: 6 12 18 I would probably just do it the way you did though. share | improve this answer ...
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How to get the seconds since epoch from the time + date output of gmtime()?

...calendar.timegm(). >>> calendar.timegm(time.gmtime()) 1293581619.0 You can turn your string into a time tuple with time.strptime(), which returns a time tuple that you can pass to calendar.timegm(): >>> import calendar >>> import time >>> calendar.timegm(time....