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Executing multi-line statements in the one-line command-line?
I'm using Python with -c to execute a one-liner loop, i.e.:
17 Answers
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Nokogiri installation fails -libxml2 is missing
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First, install the dependencies:
sudo apt-get install libxslt-dev libxml2-dev
If you still receive the error, you may be missing a compiler toolchain:
sudo apt-get install build-essential
You'll get the "libxml2 is missing" error if you're missing a build toolchain (at least I...
How to make the python interpreter correctly handle non-ASCII characters in string operations?
...ions:
The source file must be saved using the correct encoding in your text editor as well.
In Python 2, the unicode literal must have a u before it, as in s.replace(u"Â ", u"") But in Python 3, just use quotes. In Python 2, you can from __future__ import unicode_literals to obtain the Python 3 b...
Is there a way to detect if a browser window is not currently active?
...ilitychange", onchange);
Current browser support:
Chrome 13+
Internet Explorer 10+
Firefox 10+
Opera 12.10+ [read notes]
The following code falls back to the less reliable blur/focus method in incompatible browsers:
(function() {
var hidden = "hidden";
// Standards:
if (hidden in docum...
Best way to give a variable a default value (simulate Perl ||, ||= )
...tly from the conditional operator, as it is specific to a null value. For example, if $_GET['name'] is set to an empty string, the first line would return an empty string, but we could return "john doe" by using $_GET['name'] ? $_GET['name'] : 'john doe'.
– VPhantom
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A route named “x” is already in the route collection. Route names must be unique. Exception with ASP
I'm doing an ASP.NET MVC 3 web service and I keep getting this exception intermittently.
14 Answers
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Iterate a list with indexes in Python
... of for i in range(len(name_of_list)): which is what led me to provide an example using a for instead of what was shown in the first part.
– Vinko Vrsalovic
Sep 27 '12 at 9:29
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Python's “in” set operator
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Yes, but it also means hash(b) == hash(x), so equality of the items isn't enough to make them the same.
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htaccess redirect to https://www
...RewriteRule .* https://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
About proxying
When behind some forms of proxying, whereby the client is connecting via HTTPS to a proxy, load balancer, Passenger application, etc., the %{HTTPS} variable may never be on and cause a rewrite loop. This is because you...
Git file permissions on Windows
...tp://blog.lesc.se/2011/11/how-to-change-file-premissions-in-git.html
For example following command adds user execute permission to an arbitrary file:
git update-index --chmod=+x <file>
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