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Fastest way to check if string contains only digits
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18 Answers
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cd into directory without having permission
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156
@user812954's answer was quite helpful, except I had to do this this in two steps:
sudo su
cd...
YAML Multi-Line Arrays
...uence is an array. So this is the right way to express it:
key:
- string1
- string2
- string3
- string4
- string5
- string6
That's identical in meaning to:
key: ['string1', 'string2', 'string3', 'string4', 'string5', 'string6']
It's also legal to split a single-line array ove...
What exactly is Python's file.flush() doing?
...s a good thing, you should make both calls as instructed.
Addendum in 2018.
Note that disks with cache mechanisms is now much more common than back in 2013, so now there are even more levels of caching and buffers involved. I assume these buffers will be handled by the sync/flush calls as well, ...
How to position a div in the middle of the screen when the page is bigger than the screen
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android.widget.Switch - on/off event listener?
... to implement a switch button, android.widget.Switch (available from API v.14).
10 Answers
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What should I set JAVA_HOME environment variable on macOS X 10.6?
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14 Answers
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Stacking DIVs on top of each other?
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170
Position the outer div however you want, then position the inner divs using absolute. They'll...
Unique fields that allow nulls in Django
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