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What are MVP and MVC and what is the difference?

When looking beyond the RAD (drag-drop and configure) way of building user interfaces that many tools encourage you are likely to come across three design patterns called Model-View-Controller , Model-View-Presenter and Model-View-ViewModel . My question has three parts to it: ...
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What are the differences between type() and isinstance()?

...of a base class, too), while checking for equality of type does not (it demands identity of types and rejects instances of subtypes, AKA subclasses). Normally, in Python, you want your code to support inheritance, of course (since inheritance is so handy, it would be bad to stop code using yours fr...
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Red black tree over avl tree

AVL and Red black trees are both self-balancing except Red and black color in the nodes. What's the main reason for choosing Red black trees instead of AVL trees? What are the applications of Red black trees? ...
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What are the differences between json and simplejson Python modules?

...any projects using simplejson module instead of json module from the Standard Library. Also, there are many different simplejson modules. Why would use these alternatives, instead of the one in the Standard Library? ...
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What is the garbage collector in Java?

I am new to Java and confused about the garbage collector in Java. What does it actually do and when does it comes into action. Please describe some of the properties of the garbage collector in Java. ...
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Should I use tag for icons instead of ? [closed]

Facebook's HTML and Twitter Bootstrap HTML (before v3) both use the <i> tag to display icons. 7 Answers ...
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How to recover stashed uncommitted changes

I had some uncommitted changes in my development branch and I stashed them using git stash , but there were some changes which were very important among those stashed ones. Is there any way to get back those changes? ...
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Unable to copy file - access to the path is denied

... I solved this problem by deleting the contentious files from bin folder and rebuilding the project. share | improve this answer | follow | ...
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String, StringBuffer, and StringBuilder

Please tell me a real time situation to compare String , StringBuffer , and StringBuilder ? 11 Answers ...
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What's the difference between echo, print, and print_r in PHP?

I use echo and print_r much, and almost never use print . 11 Answers 11 ...