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Double Negation in C++
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@Noldorin, I think it improves readability - if you know what it means, it is simple, neat and logical.
– jwg
Jun 4 '14 at 9:45
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How do I know the script file name in a Bash script?
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me=`basename "$0"`
For reading through a symlink1, which is usually not what you want (you usually don't want to confuse the user this way), try:
me="$(basename "$(test -L "$0" && readlink "$0" || echo "$0")")"
IMO, that'll produce confu...
How can I check if a string represents an int, without using try/except?
... 0x4df, is a valid integer in some places, and 0891 is not in others. I dread to think what might arise given unicode in these kinds of checks.
– PlexQ
Mar 25 '12 at 17:03
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Meaning of acronym SSO in the context of std::string
... a more realistic implementation, with the caveat that I've never actually read any implementation of SSO "in the wild".
Implementation details
At the minimum, a std::string needs to store the following information:
The size
The capacity
The location of the data
The size could be stored as a s...
What is a Question Mark “?” and Colon “:” Operator Used for? [duplicate]
...ard term for them or where I can find more information on their use? I've read that they are similar to an 'if' 'else' statement.
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Getting the path of the home directory in C#?
... My Documents folder. The safest way to get the home folder on Win32 is to read %HOMEDRIVE%%HOMEPATH%. Reading environment variables is actually very portable to do (across Unix and Windows), so I'm not sure why the poster wanted to not do it.
Edited to add: For crossplatform (Windows/Unix) C#, I'd...
What's this =! operator? [duplicate]
...rounding binary operators with spaces, just to make it clear to the humans reading the code what the compiler is thinking.
I'm a bit surprised nobody else mentioned this, but then again I may be the only SO user to have ever touched a C compiler that old.
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Does Python have “private” variables in classes?
I'm coming from the Java world and reading Bruce Eckels' Python 3 Patterns, Recipes and Idioms .
12 Answers
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Safely remove migration In Laravel
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If the migration has been run (read: migrated) then you should roll back your migration to clear the history from your database table. Once you're rolled back you should be able to safely delete your migration file and then proceed with migrating again.
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SQL Server Operating system error 5: “5(Access is denied.)”
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SQL Server database engine service account must have permissions to read/write in the new folder.
Check out this
To fix, I did the following:
Added the Administrators Group to the file security permissions with
full control for the Data file (S:) and the Log File (T:).
Attach...