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Cannot add or update a child row: a foreign key constraint fails
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It means that you're trying to insert into table2 a UserID value that doesn't exist in table1....
Linux/Unix command to determine if process is running?
I need a platform independent (Linux/Unix|OSX) shell/bash command that will determine if a specific process is running. e.g. mysqld , httpd ...
What is the simplest way/command to do this?
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Way to get all alphabetic chars in an array in PHP?
...118] => DO [119] => DP [120] => DQ [121] => DR [122] => DS [123] => DT [124] => DU )
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Difference between binary semaphore and mutex
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They are NOT the same thing. They are used for different purposes!
While both types of semaphores have a full/empty state and use the same API, their usage is very different.
Mutual Exclusion Semaphores
Mutual Exclusion semaphores are used to protect shared resources (data structure...
How to Git stash pop specific stash in 1.8.3?
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git stash apply n
works as of git version 2.11
Original answer, possibly helping to debug issues with the older syntax involving shell escapes:
As pointed out previously, the curly braces may require escaping or quoting depending on your OS, shell, etc.
See "stash@{1} is ambiguous?" for ...
Is gettimeofday() guaranteed to be of microsecond resolution?
...that was originally written for the Win32 API, to Linux (well, porting the OS X port of the Win32 port to Linux).
10 Answer...
Adding Python Path on Windows 7
...out and back in after setting the Path variable.
– dk123
Nov 5 '13 at 2:34
Suffering a similar problem, had done every...
'npm' is not recognized as internal or external command, operable program or batch file
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Don't forget to reboot your computer after installing node! That one got me.
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Removing empty lines in Notepad++
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There is a plugin that adds a menu entitled TextFX. This menu, which houses a dizzying array ...
How do I add a path to PYTHONPATH in virtualenv
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I want to add a friendly comment that on shared hosts and similar situations venv wrapper is not desired. In such cases one venv is in effect and all that is needed making the additional install is not desired. Locally things are different, but on server/image KISS is reall...