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Rails server says port already used, how to kill that process?
...you're looking to kill whatever is on port 3000 (which is what webrick normally uses), type this in your terminal to find out the PID of the process:
$ lsof -wni tcp:3000
Then, use the number in the PID column to kill the process:
$ kill -9 PID
...
In Django, how does one filter a QuerySet with dynamic field lookups?
...a custom ModelField/FormField/WidgetField that implemented the behavior to allow the user to, on the GUI side, basically "build" a query, never seeing the actual text, but using an interface to do so. Sounds like a neat project...
– T. Stone
Sep 23 '09 at 20:2...
Python: Tuples/dictionaries as keys, select, sort
...es and so on.
I'd like to organize them in a data structure in Python that allows for easy selection and sorting. My idea was to put them into a dictionary with tuples as keys, e.g.,
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sqlalchemy unique across multiple columns
...: which RDBMS do you use?
– van
Oct 11 '13 at 9:30
3
Thanks, but my question was: did you use SA ...
Creating Threads in python
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phoenix
3,20611 gold badge2727 silver badges3131 bronze badges
answered May 25 '10 at 15:20
jkpjkp
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what is the right way to treat Python argparse.Namespace() as a dictionary?
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Community♦
111 silver badge
answered Feb 16 '15 at 17:17
Eugene YarmashEugene Yarmash
111...
What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
...es <limits.h> are applicable.
In terms of long double, that's actually a floating point value rather than an integer. Similarly to the integral types, it's required to have at least as much precision as a double and to provide a superset of values over that type (meaning at least those valu...
Meaning of tilde in Linux bash (not home directory)
... seems rather useless.
– cregox
May 11 '17 at 9:06
3
~+ is roughly the same as . However, to use...
what is .netrwhist?
...riting files across networks. .netrwhist is a history file which maintains all the directories that were modified. So whenever you modify the contents of ~/.vim it adds one entry in .netrwhist
A sample .netrwhist is as shown
let g:netrw_dirhistmax =10
let g:netrw_dirhist_cnt =6
let g:netrw_dirhis...
How to get the original value of an attribute in Rails
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11
For rails 5.1+
Appending _was is deprecated in rails 5.1, now you should append _before_last_s...