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How to get the nth occurrence in a string?

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Checking if a string is empty or null in Java [duplicate]

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This version of the application is not configured for billing through Google Play

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What must I know to use GNU Screen properly? [closed]

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C# HttpWebRequest vs WebRequest

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How to upload files to server using JSP/Servlet?

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Regular Expression to get a string between parentheses in Javascript

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NUnit vs. xUnit

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Is there a short cut for going back to the beginning of a file by vi editor?

When reading a long file by vi editor, it would be very nice to get back to the beginning of the file by some short cuts when you really need to do so. Even ctrl + B sometimes is too slow. Does anyone know such a tool? ...
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android get all contacts

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