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Is there a benefit to defining a class inside another class in Python?

What I'm talking about here are nested classes. Essentially, I have two classes that I'm modeling. A DownloadManager class and a DownloadThread class. The obvious OOP concept here is composition. However, composition doesn't necessarily mean nesting, right? ...
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RE error: illegal byte sequence on Mac OS X

...t a valid UTF-8 char. Note that, by contrast, GNU sed (Linux, but also installable on macOS) simply passes the invalid byte through, without reporting an error. Using the formerly accepted answer is an option if you don't mind losing support for your true locale (if you're on a US system and you ne...
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Is “else if” a single keyword?

...er to Can you start a class name with a numeric digit? that spaces are not allowed in identifiers and so therefore else if can not be a single keyword but must be two separate keywords. share | impr...
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What is the simplest way to convert a Java string from all caps (words separated by underscores) to

The title pretty much says it all. What's the simplest/most elegant way that I can convert, in Java, a string from the format "THIS_IS_AN_EXAMPLE_STRING" to the format " ThisIsAnExampleString "? I figure there must be at least one way to do it using String.replaceAll() and a regex. ...
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How do I diff the same file between two different commits on the same branch?

... The .. isn't really necessary, though it'll work with it (except in fairly old versions, maybe). You can also use git log or gitk to find SHA1s to use, should the two commits be very far apart. gitk also has a "diff selected -> this" and...
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relative path in require_once doesn't work

... Note that you should manually include the trailing slash in after __DIR__. So: require_once(__DIR__.'/../class/user.php'); Per the documentation, the trailing slash is omitted except for the root directory. – Ariel Allon ...
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Does Swift support reflection?

...s to me it's just a hack to enable debugging in Xcode. Protocol Mirror actually quotes the word IDE several times. – Sulthan Jun 6 '14 at 7:50 7 ...
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TypeError: module.__init__() takes at most 2 arguments (3 given)

...named Object.py . When I try to inherit from this class in another file, calling the constructor throws an exception: 5 An...
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How to output a multiline string in Bash?

How can I output a multipline string in Bash without using multiple echo calls like so: 7 Answers ...
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Determine the line of code that causes a segmentation fault?

...e tutorial to get you started with GDB. Where the segfault occurs is generally only a clue as to where "the mistake which causes" it is in the code. The given location is not necessarily where the problem resides. share ...