大约有 30,000 项符合查询结果（耗时：0.0600秒） [XML]
How do I determine k when using k-means clustering?
... Just adding a link to the Silhouette Analysis tutorial for python users scikit-learn.org/stable/auto_examples/cluster/…
– Chaitanya Shivade
May 8 '17 at 17:46
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What does “./bin/www” do in Express 4.x?
...ems like a long time ago it evolved to mean anything executable. Common in Python, Perl, and unix/linux in general.
– regularmike
Nov 19 '14 at 14:45
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Efficiently updating database using SQLAlchemy ORM
...sh()).
I've found that at times doing a large query and then iterating in python can be up to 2 orders of magnitude faster than lots of queries. I assume that iterating over the query object is less efficient than iterating over a list generated by the all() method of the query object.
[Please no...
What is the difference between a URI, a URL and a URN?
...d9-9669-0800200c9a66 a globally unique identifier
urn:publishing:book - An XML namespace that identifies the document as a type of book.
URNs can identify ideas and concepts. They are not restricted to identifying documents. When a URN does represent a document, it can be translated into a URL ...
SimpleTest vs PHPunit
...p code. So you have a full programming language at your disposal, not just xml config files and terminal parameters. PHPUnit may be more supported by tools, but says more about how the PHP community keeps choosing to back inferior things.
– still_dreaming_1
Oct...
If REST applications are supposed to be stateless, how do you manage sessions?
...ient specific (i.e. browser specific) applications or plug-ins.
HTML5 and XML Header Request has over time standardized the notion of storing complex data including application state in standard way on the client (i.e. browser) side without resorting to going back and forth between the server.
Gen...
Deploy a project using Git push
...just write this script on a language you use for development being it php, python, groovy or whatever! I never understood this love for shell scripts which have (subjectively) quite odd syntax and so little functional features.
– dVaffection
Nov 10 '14 at 4:55
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How to get a complete list of ticker symbols from Yahoo Finance? [closed]
...42
Now, you can extract the Tickers from the table on that page
library(XML)
tbl <- readHTMLTable(URL, stringsAsFactors=FALSE)
dat <- tbl[[tail(grep("Ticker", tbl), 1)]][-1, ]
colnames(dat) <- dat[1, ]
dat <- dat[-1, ]
etfs <- dat$Ticker # All ETF tickers from yahoo
length(etfs)
#[...
How to detect when an Android app goes to the background and come back to the foreground
...ou might have missed adding it in the application tag inside your Manifest.xml <application android:name="your.package.MyApplication"
– Wahib Ul Haq
Jan 23 '14 at 21:56
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Regular expression for a hexadecimal number?
...ms in other cases, depends on the flavor you need to use (php, javascript, python , golang, etc.).
This answer was taken from:http://ult-tex.net/info/perl/
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