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How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
...by, generating a queryset of authors, add the annotation (this will add an extra field to the returned values) and finally, you order them by this value
Refer to https://docs.djangoproject.com/en/dev/topics/db/aggregation/ for more insight
Good to note: if using Count, the value passed to Count does...
Elasticsearch query to return all records
I have a small database in Elasticsearch and for testing purposes would like to pull all records back. I am attempting to use a URL of the form...
...
BeautifulSoup Grab Visible Webpage Text
...ml(html)
was returning 153 us per loop
It worked really well to return a string with rendered html. This nltk module was faster than even html2text, though perhaps html2text is more robust.
betterHTML = html.decode(errors='ignore')
%timeit html2text.html2text(betterHTML)
%3.09 ms per loop
...
What do commas and spaces in multiple classes mean in CSS?
..._12 .grid_6,
.container_16 .grid_8 {
width: 460px;
}
That says "make all .grid_6's within .container_12's and all .grid_8's within .container_16's 460 pixels wide." So both of the following will render the same:
<div class="container_12">
<div class="grid_6">460px Wide</div&g...
领域驱动设计系列（五）:事件驱动之异步事件 - 更多技术 - 清泛网 - 专注C/...
...void Handle(TEvent e);
}
public class HeadedEvent:Event
{
public string Name { get; set; }
}
public class GuoJiZhangMotherEventHandler : IEventHandler<HeadedEvent>
{
public void Handle(HeadedEvent e)
{
Console.WriteLine(e.Name+", Are you kidding me?");
}
}
...
Need to ZIP an entire directory using Node.js
...eir code (like me).
const archiver = require('archiver');
/**
* @param {String} source
* @param {String} out
* @returns {Promise}
*/
function zipDirectory(source, out) {
const archive = archiver('zip', { zlib: { level: 9 }});
const stream = fs.createWriteStream(out);
return new Promise(...
How to implement __iter__(self) for a container object (Python)
...
I normally would use a generator function. Each time you use a yield statement, it will add an item to the sequence.
The following will create an iterator that yields five, and then every item in some_list.
def __iter__(self):
...
How do you merge two Git repositories?
...act.
You should treat this like a usual file move commit: you will need an extra jump when reaching it.
# finishes with all files added at once commit
git log rails/README.md
# then continue from original tree
git log <rev> -- README.md
There are more complex solutions like doing this manu...
How to create a self-signed certificate with OpenSSL
...me = subject
req_extensions = req_ext
x509_extensions = x509_ext
string_mask = utf8only
# The Subject DN can be formed using X501 or RFC 4514 (see RFC 4519 for a description).
# Its sort of a mashup. For example, RFC 4514 does not provide emailAddress.
[ subject ]
countryName ...
How can I add an element after another element?
... it. I'd normally have the '#bla' input selected already, and then add the extra content afterwards. Purely my preference though, I'm not sure whether either method has a speed benefit.
– Rowan
Feb 11 '10 at 13:25
...