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Validating IPv4 addresses with regexp

...so it ends with a word boundary rather than with the end of line? Additionally here I've marked the non-capturing groups to avoid unwanted sub-matches. NB: This still doesn't take into account @dty's comment as I'm not familiar with that form of IP; though he's correct that it seems valid. ...
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Can I install Python 3.x and 2.x on the same Windows computer?

I'm running Windows and the shell/OS automatically runs Python based on the registry settings when you run a program on the command line. Will this break if I install a 2.x and 3.x version of Python on the same machine? ...
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How to delete all rows from all tables in a SQL Server database?

How to delete all rows from all tables in a SQL Server database? 11 Answers 11 ...
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How do I get the base URL with PHP?

... XAMPP on Windows Vista. In my development, I have http://127.0.0.1/test_website/ . 22 Answers ...
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How can I generate a unique ID in Python? [duplicate]

...in newer versions, but most people probably don't have that yet, so I generally avoid this module. Caused me major headaches with listen sockets... – Glenn Maynard Jul 31 '09 at 3:14 ...
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Print string to text file

...t_file.close() If you use a context manager, the file is closed automatically for you with open("Output.txt", "w") as text_file: text_file.write("Purchase Amount: %s" % TotalAmount) If you're using Python2.6 or higher, it's preferred to use str.format() with open("Output.txt", "w") as text...
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php $_POST array empty upon form submission

... "WWW." The $_POST array was getting emptied in the process. So to fix it all I had to do was submit to www.domain.com share | improve this answer | follow | ...
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How to read a large file line by line?

...e line from the file. echo $file->fgets(); } // Unset the file to call __destruct(), closing the file handle. $file = null; share | improve this answer | follow ...
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What's the difference between design patterns and architectural patterns?

...owledge. Patterns are distilled commonality that you find in programs. It allows us to deconstruct a large complex structure and build using simple parts. It provides a general solution for a class of problems. A large complex software goes through a series of deconstruction at different levels. ...
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Removing viewcontrollers from navigation stack

...e this code and enjoy: NSMutableArray *navigationArray = [[NSMutableArray alloc] initWithArray: self.navigationController.viewControllers]; // [navigationArray removeAllObjects]; // This is just for remove all view controller from navigation stack. [navigationArray removeObjectAtIndex: 2]; // ...