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How to perform OR condition in django queryset?
...ll=True)
ordered_queryset = combined_queryset.order_by('-income')
Update 2019-06-20: This is now fully documented in the Django 2.1 QuerySet API reference. More historic discussion can be found in DjangoProject ticket #21333.
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Calling shell functions with xargs
...ho '$(date)' | xargs -I {} bash -c 'echo_var "{}"'
Sun Aug 18 11:56:45 CDT 2019
Another example of why not:
echo '\"; date\"' | xargs -I {} bash -c 'echo_var "{}"'
This is what is output using the safe format:
$ echo '$(date)' | xargs -I {} bash -c 'echo_var "$@"' _ {}
$(date)
This is compar...
__FILE__, __LINE__, and __FUNCTION__ usage in C++
...utility/source_location
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1208r5.pdf
The documentation says:
constexpr const char* function_name() const noexcept;
6 Returns: If this object represents a position in the body of a function,
returns an implementation-defined NTBS tha...
How can javascript upload a blob?
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2019 Update
This updates the answers with the latest Fetch API and doesn't need jQuery.
Disclaimer: doesn't work on IE, Opera Mini and older browsers. See caniuse.
Basic Fetch
It could be as simple as:
fetch(`https://...
Use a URL to link to a Google map with a marker on it
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This seems to work well in 2019. Do you know if there's a way to specify satellite as map type?
– Eric Duminil
Sep 2 '19 at 15:28
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Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
...e; enabled; vendor preset: disabled)
Active: active (running) since Tue 2019-06-18 18:28:18 UTC; 924ms ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Process: 3350 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD...
File Upload ASP.NET MVC 3.0
...eleased in 2011 , it is not about ASP.NET Core 3.0 which was released in 2019)
21 Answers
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How do I install a plugin for vim?
...
Update (as 2019):
cd ~/.vim
git clone git://github.com/tpope/vim-haml.git pack/bundle/start/haml
Explanation (from :h pack ad :h packages):
All the directories found are added to runtimepath. They must be in ~/.vim/pack/whatever/st...
How do I specify the platform for MSBuild?
...
For VS2017 and 2019... with the modern core library SDK project files, the platform can be changed during the build process. Here's an example to change to the anycpu platform, just before the built-in CoreCompile task runs:
<Project Sdk...
Pull request vs Merge request
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GitLab 12.1 (July 2019) introduces a difference:
"Merge Requests for Confidential Issues"
When discussing, planning and resolving confidential issues, such as security vulnerabilities, it can be particularly challenging for open source p...