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How can I count the occurrences of a list item?
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list.count(x) returns the number of times x appears in a list
see:
http://docs.python.org/tutorial/datastructures.html#more-on-lists
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Update all objects in a collection using LINQ
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Is there a way to 'uniq' by column?
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sort -u -t, -k1,1 file
-u for unique
-t, so comma is the delimiter
-k1,1 for the key field 1
Test result:
overflow@domain2.com,2009-11-27 00:58:29.793000000,xx3.net,255.255.255.0
stack2@domain.com,2009-11-27 01:05:47.893000000,xx2.net,127.0.0.1
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Asynchronous vs Multithreading - Is there a difference?
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JavaScript is single-threaded and asynchronous. When you use XmlHttpRequest, for example, you provide it with a callback function that will be executed asynchronously when the response returns.
John Resig has a good explanation of the related issue of how timers work in JavaScript.
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Using an SSH keyfile with Fabric
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Also worth mentioning here that you can use the command line args for this:
fab command -i /path/to/key.pem [-H [user@]host[:port]]
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How to generate a Dockerfile from an image?
.... Parameter -sV=1.36 is not always required.
Reference: https://hub.docker.com/repository/docker/alpine/dfimage
below is the old answer, it doesn't work any more.
$ docker pull centurylink/dockerfile-from-image
$ alias dfimage="docker run -v /var/run/docker.sock:/var/run/docker.sock --rm centurylink...
How do you connect to multiple MySQL databases on a single webpage?
...l_xx functions are deprecated since php 5.5 and removed since php 7.0 (see http://php.net/manual/intro.mysql.php), use mysqli_xx functions or see the answer below from @Troelskn
You can make multiple calls to mysql_connect(), but if the parameters are the same you need to pass true for the '$new_...
How do I remove documents using Node.js Mongoose?
...been updated) that this bypasses middleware - see the bottom of mongoosejs.com/docs/middleware.html - so be careful, using this method can cause serious, hard to track down issues.
– Jed Watson
May 13 '14 at 7:25
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What is the HTML tabindex attribute?
... tabbing (pressing the tab key to move focus) within the page.
Reference: http://www.w3.org/TR/html401/interact/forms.html#h-17.11.1
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Analytics Google API Error 403: “User does not have any Google Analytics Account”
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I got the email address (something like xxxxxx@developer.gserviceaccount.com) for the service account by looking under the "API Access" tab in the Google APIs console.
Then, I followed Google's instructions for adding an email address to an Analytics profile. Now everything's working as expected.
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