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Determine if Python is running inside virtualenv
Is it possible to determine if the current script is running inside a virtualenv environment?
16 Answers
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How to monitor the memory usage of Node.js?
.... Here is an example from in Node v0.12.2 on a 64-bit system:
$ node --expose-gc
> process.memoryUsage(); // Initial usage
{ rss: 19853312, heapTotal: 9751808, heapUsed: 4535648 }
> gc(); // Force a GC for the baseline.
undefined
> process.memoryUsage(); // Baseline mem...
Java current machine name and logged in user?
Is it possible to get the name of the currently logged in user (Windows/Unix) and the hostname of the machine?
4 Answers
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Find and replace Android studio
...king for is:
Ctrl+Shift+R on Windows and Linux/Ubuntu
Cmd+Shift+R on Mac OS X
ref: source
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how to create a file name with the current date & time in python?
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@rwbyrd That is odd, I just tried those exact 3 lines (copy-paste) with Python 3.4.1 and 2.7.6 and it works - though with Python 3 you need to use print(timestr). Did you copy this text from above? Perhaps a typo otherwise?
– Levon
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CPU Privilege Rings: Why rings 1 and 2 aren't used?
...iminished greatly.
The intent by Intel in having rings 1 and 2 is for the OS to put device drivers at that level, so they are privileged, but somewhat separated from the rest of the kernel code.
Rings 1 and 2 are in a way, "mostly" privileged. They can access supervisor pages, but if they attempt ...
psql: could not connect to server: No such file or directory (Mac OS X)
Upon restarting my Mac I got the dreaded Postgres error:
21 Answers
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How can I start PostgreSQL server on Mac OS X?
...nchctl plists to start automatically. For more information, run brew info postgres.
Start manually
pg_ctl -D /usr/local/var/postgres start
Stop manually
pg_ctl -D /usr/local/var/postgres stop
Start automatically
"To have launchd start postgresql now and restart at login:"
brew services start postgre...
How do I disable orientation change on Android?
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I've always found you need both
android:screenOrientation="nosensor" android:configChanges="keyboardHidden|orientation"
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\r\n, \r and \n what is the difference between them? [duplicate]
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\r = CR (Carriage Return) → Used as a new line character in Mac OS before X
\n = LF (Line Feed) → Used as a new line character in Unix/Mac OS X
\r\n = CR + LF → Used as a new line character in Windows
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