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When to make a type non-movable in C++11?
...gave a good example of a type which shouldn't be movable: std::mutex.
The OS's native mutex type (e.g. pthread_mutex_t on POSIX platforms) might not be "location invariant" meaning the object's address is part of its value. For example, the OS might keep a list of pointers to all initialized mutex ...
How Can I Browse/View The Values Stored in Redis [closed]
...source desktop tools, also take a look on Redis Desktop Manager.
It's a cross-platform open source Redis DB management tool (i.e. Admin GUI)
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onSaveInstanceState () and onRestoreInstanceState ()
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Usually you restore your state in onCreate(). It is possible to restore it in onRestoreInstanceState() as well, but not very common. (onRestoreInstanceState() is called after onStart(), whereas onCreate() is called before onStart().
Use the put methods to store values in onSav...
live output from subprocess command
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Executive Summary (or "tl;dr" version): it's easy when there's at most one subprocess.PIPE, otherwise it's hard.
It may be time to explain a bit about how subprocess.Popen does its thing.
(Caveat: this is for Python 2.x, although 3.x is similar; and I'm quite fuzzy on the Windows variant. ...
Why does running the Flask dev server run itself twice?
...use_reloader to False you'll see the behaviour go away, but then you also lose the reloading functionality:
app.run(port=4004, debug=config.DEBUG, host='0.0.0.0', use_reloader=False)
You can disable the reloader when using the flask run command too:
FLASK_DEBUG=1 flask run --no-reload
You can ...
How to read a file without newlines?
... only works if the file ends with a newline, otherwise the last line will lose a character.
This assumption is true in most cases (especially for files created by text editors, which often do add an ending newline anyway).
If you want to avoid this you can add a newline at the end of file:
with o...
Best way to make Django's login_required the default
...ication, this model will work. If this isn't a one-to-one fit, you may choose to modify the middleware to suit your circumstances more closely.
What I like about this approach - besides removing the necessity of littering the codebase with @login_required decorators - is that if the authentication...
What does the NS prefix mean?
...don't mind if the accepted answer changes to one of the others (if that's possible - never checked that).
– Olaf Kock
Aug 8 '12 at 20:21
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List files with certain extensions with ls and grep
...itch to prevent that directories are recursed.
– Carlos Eugenio Thompson Pinzón
Oct 5 '13 at 16:50
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What is that “total” in the very first line after ls -l? [closed]
... is freely modifiable with the
--block-size=<int> flag on ls, the POSIXLY_CORRECT=1 GNU
environment variable (to get 512-byte units), or the -k flag to force
1kB units.
physical_block_size is the OS dependent value of an internal block interface, which may or may not be connected to t...