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Bin size in Matplotlib (Histogram)
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what is the binwidth here?have u set that value before?
– UserYmY
Sep 29 '15 at 13:25
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Convert seconds to Hour:Minute:Second
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You can use the gmdate() function:
echo gmdate("H:i:s", 685);
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git add, commit and push commands in one?
...e change must be deployed to live server even for development. So, we have setup commit hooks to do that. You do a change, commit it and see the change in your app. With git, I need to add, stage then push it to see a single change. Doesn't it look a overkill?
– SenG
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Reset C int array to zero : the fastest way?
...int, long long int or unsigned long long int, what is the fastest way to reset all its content to zero (not only for initialization but to reset the content several times in my program)? Maybe with memset?
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Quicksort: Choosing the pivot
...requirements. Choosing a pivot at random makes it harder to create a data set that generates O(N^2) performance. 'Median-of-three' (first, last, middle) is also a way of avoiding problems. Beware of relative performance of comparisons, though; if your comparisons are costly, then Mo3 does more co...
Foreign Key to non-primary key
...erformance (as noted above). Does anyone foresee any problems with such a setup?
– Daniel Macias
Oct 19 '15 at 5:54
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Read lines from a file into a Bash array [duplicate]
...ho "${XYZ[5]}"
sync:x:5:0:sync:/sbin:/bin/sync
Also note that you may be setting the array just fine but reading it wrong - be sure to use both double-quotes "" and braces {} as in the example above
Edit:
Please note the many warnings about my answer in comments about possible glob expansion, ...
Command line progress bar in Java
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pb.stepTo(n); // step directly to n
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pb.maxHint(n);
// reset the max of this progress bar as n. This may be useful when the program
// gets new information about the current progress.
// Can set n to be less than zero: this means that this progress bar would become
// indefin...
Using “Object.create” instead of “new”
...he Object.defineProperties and Object.defineProperty methods.
It lets you set the property attributes (enumerable, writable, or configurable), which can be really useful.
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invalid byte sequence for encoding “UTF8”
...iconv utility to change encoding of the input data.
iconv -f original_charset -t utf-8 originalfile > newfile
You can change psql (the client) encoding following the instructions on Character Set Support. On that page, search for the phrase "To enable automatic character set conversion".
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