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What is the difference between old style and new style classes in Python?

What is the difference between old style and new style classes in Python? When should I use one or the other? 8 Answers ...
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“implements Runnable” vs “extends Thread” in Java

From what time I've spent with threads in Java, I've found these two ways to write threads: 42 Answers ...
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How do you 'redo' changes after 'undo' with Emacs?

This article says that "Emacs has redo because you can reverse direction while undoing, thereby undoing the undo". 9 Answe...
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How do I disable a Pylint warning?

I'm trying to disable warning C0321 ("more than one statement on a single line" -- I often put if statements with short single-line results on the same line), in Pylint 0.21.1 (if it matters: astng 0.20.1, common 0.50.3, Python 2.6.6 (r266:84292, Sep 15 2010, 16:22:56)). ...
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PHP Regex to check date is in YYYY-MM-DD format

I'm trying to check that dates entered by end users are in the YYYY-MM-DD. Regex has never been my strong point, I keep getting a false return value for the preg_match() I have setup. ...
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How to detect my browser version and operating system using JavaScript?

I have tried using the code below but it only display results in Chrome and Mozilla not working in IE6. 10 Answers ...
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What's the pythonic way to use getters and setters?

I'm doing it like: 8 Answers 8 ...
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Calculate difference in keys contained in two Python dictionaries

Suppose I have two Python dictionaries - dictA and dictB . I need to find out if there are any keys which are present in dictB but not in dictA . What is the fastest way to go about it? ...
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What is the difference between “text” and new String(“text”)?

What is the difference between these two following statements? 12 Answers 12 ...
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When do you use the “this” keyword? [closed]

I was curious about how other people use the this keyword. I tend to use it in constructors, but I may also use it throughout the class in other methods. Some examples: ...