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How to TryParse for Enum value?

I want to write a function which can validate a given value (passed as a string) against possible values of an enum . In the case of a match, it should return the enum instance; otherwise, it should return a default value. ...
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Why is reading lines from stdin much slower in C++ than Python?

I wanted to compare reading lines of string input from stdin using Python and C++ and was shocked to see my C++ code run an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm mis...
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How to get hex color value rather than RGB value?

Using the following jQuery will get the RGB value of an element's background color: 19 Answers ...
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GlobalConfiguration.Configure() not present after Web API 2 and .NET 4.5.1 migration

I recently started following this guide to migrate my project to .NET 4.5.1 and Web Api 2. 11 Answers ...
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Is there a faster/shorter way to initialize variables in a Rust struct?

In the following example, I would much prefer to assign a value to each field in the struct in the declaration of the fields. Alternatively, it effectively takes one additional statement for each field to assign a value to the fields. All I want to be able to do is to assign default values when the ...
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dynamic_cast and static_cast in C++

I am quite confused with the dynamic_cast keyword in C++. 10 Answers 10 ...
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How to print a list of symbols exported from a dynamic library

So I've been trying to get dynamic libraries to work in my XCode project under Mac OS X. So far no joy. 4 Answers ...
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How to remove the querystring and get only the url?

Im using PHP to build the URL of the current page. Sometimes, URLs in the form of 16 Answers ...
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How do I resolve the “java.net.BindException: Address already in use: JVM_Bind” error?

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Python Regex - How to Get Positions and Values of Matches

How can I get the start and end positions of all matches using the re module? For example given the pattern r'[a-z]' and the string 'a1b2c3d4' I'd want to get the positions where it finds each letter. Ideally, I'd like to get the text of the match back too. ...