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What is the difference between self::$bar and static::$bar in PHP?

...keyword. In this case, your Foo class defines a protected static property called $bar. When you use self in the Foo class to refer to the property, you're referencing the same class. Therefore if you tried to use self::$bar elsewhere in your Foo class but you had a Bar class with a different value ...
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How to load/edit/run/save text files (.py) into an IPython notebook cell?

...yfile.py into the current cell For more magic and help %lsmagic list all the other cool cell magic commands. %COMMAND-NAME? for help on how to use a certain command. i.e. %run? Note Beside the cell magic commands, IPython notebook (now Jupyter notebook) is so cool that it allows you to ...
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How to sort in-place using the merge sort algorithm?

...the merging sequence that the unmerged elements won't be overwritten. Actually, instead of sorting the second half of the working area, we can sort the first half, and put the working area between the two sorted arrays like this: ... sorted 1/4 array B | unsorted work area | ... sorted 1/2 array A...
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LinkedBlockingQueue vs ConcurrentLinkedQueue

... for communication between producer and consumer threads would people generally recommend using LinkedBlockingQueue or ConcurrentLinkedQueue ? ...
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android button selector

... please elaborate more for how to set pressed and non-pressed state? (with all the components above such as round color, stroke, etc). Many thanks! – pearmak Dec 24 '12 at 17:13 ...
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What is a MIME type?

..." the client can go "Ah, this is an HTML document, I can render that internally", while if the server says "This is application/pdf" the client can go "Ah, I need to launch the FoxIt PDF Reader plugin that the user has installed and that has registered itself as the application/pdf handler." You'll...
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Change the name of the :id parameter in Routing resources for Rails

...:name', :to => 'sites#show', :as => site end You would have to manually add all the routes that resources automatically creates for you, but it would achieve what you're looking for. You could also effectively use the :controller option with scope and additional scope blocks to take out some...
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YouTube iframe API: how do I control an iframe player that's already in the HTML?

... Fiddle Links: Source code - Preview - Small version Update: This small function will only execute code in a single direction. If you want full support (eg event listeners / getters), have a look at Listening for Youtube Event in jQuery As a result of a deep code a...
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Using varchar(MAX) vs TEXT on SQL Server

...Full Text Index. LIKE is simpler to implement and is often suitable for small amounts of data, but it has extremely poor performance with large data due to its inability to use an index. share | im...
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GUI not working after rewriting to MVC

...me concepts. Addendum: I've modified the original example to show how MVC allows one to enhance the View without changing the nature of the Model. Addendum: As @akf observes, MVC hinges on the observer pattern. Your Model needs a way to notify the View of changes. Several approaches are widely use...