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What special characters must be escaped in regular expressions?

... what about colon, ":"? Shall it be escaped inside character classes as well as outside? en.wikipedia.org/wiki/Perl_Compatible_Regular_Expressions says "PCRE has consistent escaping rules: any non-alpha-numeric character may b...
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Quick-and-dirty way to ensure only one instance of a shell script is running at a time

What's a quick-and-dirty way to make sure that only one instance of a shell script is running at a given time? 40 Answers ...
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How do I use Assert to verify that an exception has been thrown?

...but I do not recommend using it since it is not flexible enough. Consider what happens if the exception type is thrown by your test setup code: test passes, but didn't actually do what you expected. Or what if you want to test the state of the exception object. I usually want to use StringAssert.C...
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Efficient way to remove keys with empty strings from a dict

...dictionary. Rather, it creates a new dictionary. Usually this is exactly what someone wants and is probably what the OP needs, but it is not what the OP asked for. – Steven Rumbalski Aug 25 '12 at 3:06 ...
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How can I debug javascript on Android?

... What was that about a small device like a phone!?!?!? bestbuy.com/site/samsung-galaxy-view-18-4-32gb-black/… – Michael Dillon Oct 3 '16 at 20:50 ...
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frequent issues arising in android view, Error parsing XML: unbound prefix

... What do you mean by "the first node"? In the original question is that the TextView? – David Doria Sep 6 '13 at 19:49 ...
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What's the difference between VARCHAR and CHAR?

What's the difference between VARCHAR and CHAR in MySQL? 14 Answers 14 ...
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Occurrences of substring in a string

...eed "lastIndex++" instead of "lastIndex += findStr.length()") depending on what you are looking for. – Stanislav Kniazev Apr 23 '09 at 12:52 ...
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Entity Framework is Too Slow. What are my options? [closed]

...ptimization you can use some projections to give EF more information about what you trying to accomplish. Example: Product product = db.Products.SingleOrDefault(p => p.Id == 10); // executes SELECT * FROM Products WHERE Id = 10 ProductDto dto = new ProductDto(); foreach (Category category in p...
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How to get the last value of an ArrayList

... Won't work. what if the list is empty, list.size() will return 0. and you'll end up with list.get(-1); – FRR Jan 21 '15 at 19:36 ...