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Class constants in python

In python, I want a class to have some "constants" (practically, variables) which will be common in all subclasses. Is there a way to do it with friendly syntax? Right now I use: ...
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What is the best way to check for Internet connectivity using .NET?

...google.com does not return some HTML :) – Daniel Vassallo Jan 9 '10 at 1:01 3 @Daniel: true on th...
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Combine multiple Collections into a single logical Collection?

...llections (e.g. 3 ArrayLists) as members of a class. Now, I want to expose all the elements to other classes so they can simply iterate over all elements (ideally, read only). I'm using guava collections and I wonder how I could use guava iterables/iterators to generate a logical view on the interna...
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How can I handle R CMD check “no visible binding for global variable” notes when my ggplot2 syntax i

... Just another warning. aes_string does not allow you to use functions to manipulate the x and y values. Say that you would like to log transform y in which case aes_string(x = 'x.values', y='log(y.values)') of course doesn't work. I use these kind of transformations a...
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How do I make a request using HTTP basic authentication with PHP curl?

... You want this: curl_setopt($ch, CURLOPT_USERPWD, $username . ":" . $password); Zend has a REST client and zend_http_client and I'm sure PEAR has some sort of wrapper. But its easy enough to do on your own. So the entire request might look ...
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Set cURL to use local virtual hosts

... Actually, curl has an option explicitly for this: --resolve Instead of curl -H 'Host: yada.com' http://127.0.0.1/something use curl --resolve 'yada.com:80:127.0.0.1' http://yada.com/something What's the difference, you ask? A...
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How to convert Set to Array?

...y good way to get properties, except for generator [Set].values, which is called in an awkward way of mySet.values.next() . ...
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jquery IDs with spaces

... so Elliot's answer helps tremendously, whereas glavic's offers no help at all. – daybreaker Jun 27 '11 at 18:59 Thank...
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abort, terminate or exit?

What's the difference between those three, and how shall I end program in case of exception which I can't handle properly? ...
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How can I trigger a JavaScript event click

...link" onclick="javascript:Test('Test');">Google Chrome</a> and call the .click() method in your JavaScript code via a for loop: var link = document.getElementById('my-link'); for(var i = 0; i < 50; i++) link.click(); ...