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Getting the last element of a list
...handled:
>>> empty_list[-1]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
IndexError: list index out of range
But again, slicing for this purpose should only be done if you need:
a new list created
and the new list to be empty if the prior list wa...
REST API - why use PUT DELETE POST GET?
...y to specify the type of data explicitly would be via the already existing file extension such as .js, .json, .html, or .xml. A missing file extension would default to whatever format is default (such as JSON); a file extension that's not supported could return a 501 Not Implemented status code.
An...
How to use concerns in Rails 4
...e Taggable
...
end
# app/models/concerns/taggable.rb
# notice that the file name has to match the module name
# (applying Rails conventions for autoloading)
module Taggable
extend ActiveSupport::Concern
included do
has_many :taggings, as: :taggable
has_many :tags, through: :tagging...
What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
...and didn't have a package manager, package repositories, security updates, etc.
– Stephen C
Oct 22 '16 at 2:15
...
SQL Server query to find all permissions/access for all users in a database
... as tables, views, and stored procedures, either directly or due to roles, etc. This report would be used for security auditing purposes. Not sure if anyone has a query that will fit my needs completely, but hopefully something that will give me a good start. Either sql 2008, 2005 or 2000 will do,...
How to list containers in Docker
...des all states) use the given command:
docker ps -n=-1
To display total file sizes use the given command:
docker ps -s
The content presented above is from docker.com.
In the new version of Docker, commands are updated, and some management commands are added:
docker container ls
It is used ...
How to run a Python script in the background even after I logout SSH?
...ves on is own
You can of course replace the content of your bgservice.py file in place of my_func.
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When writing a directive in AngularJS, how do I decide if I need no new scope, a new child scope, or
...e scope within the directive is used. If it's just about saving space in a file, I'm not sure a directive is the best approach. It increases processing time for the sake of the developer. But if you must, then go for it. Or use an ngInclude. Or do it as part of your build. Many options!
...
Mailto links do nothing in Chrome but work in Firefox?
...ged the association to Outlook using "Default Programs" -> "Associate a file type or protocol with a program".
MAILTO is way below in the list. This screenshot may help.
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Do I cast the result of malloc?
...at it keeps you from noticing you failed to #include an appropriate header file misses the forest for the trees. It's the same as saying "don't worry about the fact you failed to ask the compiler to complain about not seeing prototypes -- that pesky stdlib.h is the REAL important thing to remember!"...