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Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
... or without -n/-z is suitable for checking a variable.
| 1a 2a 3a 4a 5a 6a | 1b 2b 3b 4b 5b 6b
| [ [" [-n [-n" [-z [-z" | [[ [[" [[-n [[-n" [[-z [[-z"
-----+------------------------------------+------------------------------------
unset| ...
How can I group by date time column without taking time into consideration
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383
Cast/Convert the values to a Date type for your group by.
GROUP BY CAST(myDateTime AS DATE)
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Using git, how do I ignore a file in one branch but have it committed in another branch?
...hat I'm deploying to Heroku . The source code tree includes a bunch of mp3 files (the website will be for a recording project I was heavily involved with).
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How to delete all datastore in Google App Engine?
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answered Jun 30 '09 at 8:55
JohnIdolJohnIdol
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Troubleshooting BadImageFormatException
...assant
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WAMP/XAMPP is responding very slow over localhost
...P6\Parameters
Right click on Parameters, expand New, and select DWORD (32-bit) Value
Enter DisabledComponents into the Name field
Double click on the new DisabledComponents value, enter ffffffff into the Value data dialog box, and click the OK button
Confirm the new registry value conta...
How do I check that multiple keys are in a dict in a single pass?
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370
Well, you could do this:
>>> if all (k in foo for k in ("foo","bar")):
... print...
Android - implementing startForeground for a service?
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131
I'd start by completely filling in the Notification. Here is a sample project demonstrating the...
Prevent scroll-bar from adding-up to the Width of page on Chrome
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edited Sep 2 '13 at 18:28
answered Aug 31 '13 at 13:55
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Adding a guideline to the editor in Visual Studio
...e columns by listing more than one number after the color specifier:
RGB(230,230,230), 4, 80
Puts a white line at column 4 and column 80. This should be the value of a string value Guides in "Text Editor" key (see bellow).
Be sure to pick a line color that will be visisble on your background. Th...