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Difference between Select and ConvertAll in C#
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Select is a LINQ extension method and works on all IEnumerable<T> objects whereas ConvertAll is implemented only by List<T>. The ConvertAll method exists since .NET 2.0 whereas LINQ was introduced with 3.5.
You should favor Select over ConvertAll as it works ...
What does the “~” (tilde/squiggle/twiddle) CSS selector mean?
...ter .a in HTML source order.
Likewise, .check:checked ~ .content matches all .content elements that are siblings of .check:checked and appear after it.
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My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets
...hem. Some of the questions I read are related to specific implementation challenges while others focus on general concepts. I just want to make sure I understood all of the concepts and the reasoning why technology X was invented over technology Y and so on. So here goes:
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Difference between static STATIC_URL and STATIC_ROOT on Django
...example.com/static/"
now the command ./manage.py collectstatic will copy all the static files(ie in static folder in your apps, static files in all paths) to the directory /var/www/example.com/static/. now you only need to serve this directory on apache or nginx..etc.
STATIC_URL
The URL of w...
how does array[100] = {0} set the entire array to 0?
...se an empty initializer list, causing the compiler to aggregate-initialize all of the elements of the array:
char array[100] = {};
As for what sort of code the compiler might generate when you do this, take a look at this question: Strange assembly from array 0-initialization
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How is Math.Pow() implemented in .NET Framework?
...k at the implementation of Math.Pow() function. But in .NET Reflector , all I found was this:
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OO Design in Rails: Where to put stuff
I'm really enjoying Rails (even though I'm generally RESTless), and I enjoy Ruby being very OO. Still, the tendency to make huge ActiveRecord subclasses and huge controllers is quite natural (even if you do use a controller per resource). If you were to create deeper object worlds, where would you p...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
...emfile.lock file is where Bundler records the exact versions that were installed. This way, when the same library/project is loaded on another machine, running bundle install will look at the Gemfile.lock and install the exact same versions, rather than just using the Gemfile and installing the most...
What is this CSS selector? [class*=“span”]
... Would like to add another reference just in case people find this useful: AllCssSelectors.com
– user3339411
Jul 7 '15 at 5:44
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Why does pthread_cond_wait have spurious wakeups?
...sor systems, making condition wakeup completely predictable might substantially slow all condition variable operations.
In the following comp.programming.threads discussion, he expands on the thinking behind the design:
Patrick Doyle wrote:
> In article , Tom Payne wrote:
> >Kaz Kyl...