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How do you convert a byte array to a hexadecimal string, and vice versa?

How can you convert a byte array to a hexadecimal string, and vice versa? 45 Answers 4...
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CSS text-decoration underline color [duplicate]

...tion) This answer is outdated since text-decoration-color is now supported by most modern browsers. You can do this via the following CSS rule as an example: text-decoration-color:green If this rule isn't supported by an older browser, you can use the following solution: Setting your word wit...
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How to make a SPA SEO crawlable?

I've been working on how to make a SPA crawlable by google based on google's instructions . Even though there are quite a few general explanations I couldn't find anywhere a more thorough step-by-step tutorial with actual examples. After having finished this I would like to share my solution so th...
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Why is it not advisable to have the database and web server on the same machine?

... one server compromised, an attacker could still do serious damage, either by deleting the database, or messing with the application code. ...
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How can I tell PyCharm what type a parameter is expected to be?

...t need a docstring. As an added benefit, those annotations can be accessed by code: >>> King.repress.__annotations__ {'peasant': <class '__main__.Person'>, 'return': <class 'bool'>} Update: As of PEP 484, which has been accepted for Python 3.5, it is also the official convent...
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Understanding Fragment's setRetainInstance(boolean)

...ser leaves the activity? Just like Activitys, Fragments may be destroyed by the system when memory resources are low. Whether you have your fragments retain their instance state across configuration changes will have no effect on whether or not the system will destroy the Fragments once you leave ...
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Where does Xcode 4 store Scheme Data?

...inally found the answer on somebody's Twitter. Schemes are stored per user by default, but if you go to Manage Schemes and click the "Shared" checkbox on the far right for each one, they'll show up in the xcshareddata directory instead of your xcuserdata directory, where they'll be seen and used by ...
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What does Class mean in Java?

...able class, hence you can use the syntax Class<T> where T is a type. By writing Class<?>, you're declaring a Class object which can be of any type (? is a wildcard). The Class type is a type that contains meta-information about a class. It's always good practice to refer to a generic t...
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Windows service on Local Computer started and then stopped error

... and then stopped. Some services stop automatically if they are not in use by other service or programs) when there's something wrong with my code, like non-existing drive paths, etc. The windows service will not start. ...
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Is there a way of having git show lines added, lines changed and lines removed?

... The output of git diff --numstat is broken down by file. To see the total added/removed for the diff, you can pipe it to awk: git diff --numstat | awk '{ added += $1; removed += $2 } END { print "+" added " -" removed }' – hughes Dec ...