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Cartesian product of multiple arrays in JavaScript
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109
2020 Update: 1-line (!) answer with vanilla JS
Original 2017 Answer: 2-line answer with vanill...
Cron jobs and random times, within given hours
...a day at completely random times. I also want it to run only between 9am - 11pm.
12 Answers
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How to get maximum value from the Collection (for example ArrayList)?
...aximum value in this list. E.g. suppose the arrayList stored values are : 10, 20, 30, 40, 50 and the max
value would be 50 .
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multiprocessing: How do I share a dict among multiple processes?
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169
A general answer involves using a Manager object. Adapted from the docs:
from multiprocessing...
Which is more efficient, a for-each loop, or an iterator?
...All iterators have as a fundamental requirement that next() should be an O(1) operation, making the loop O(n).
To verify that the iterator is used underwater by the new for loop syntax, compare the generated bytecodes from the following two Java snippets. First the for loop:
List<Integer> a...
What is the difference between 'typedef' and 'using' in C++11?
I know that in C++11 we can now use using to write type alias, like typedef s:
7 Answers
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Subtract two variables in Bash
...he exit status:
The exit status is 0 if EXPRESSION is neither null nor 0, 1 if EXPRESSION is null or 0.
Keep this in mind when using the expression in a bash script in combination with set -e which will exit immediately if a command exits with a non-zero status.
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AWS Error Message: A conflicting conditional operation is currently in progress against this resourc
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edited Nov 27 '13 at 18:33
Faisal Mansoor
1,8612020 silver badges2525 bronze badges
answered ...