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How can I add numbers in a Bash script?

I have this Bash script and I had a problem in line 16. How can I take the previous result of line 15 and add it to the variable in line 16? ...
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Email address validation using ASP.NET MVC data type attributes

I have some problems with the validation of a Email. 10 Answers 10 ...
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How to use XPath in Python?

What are the libraries that support XPath? Is there a full implementation? How is the library used? Where is its website? 1...
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SQL Server Management Studio, how to get execution time down to milliseconds

When I submit a batch (e.g., perform a query) in SSMS, I see the time it took to execute in the status bar. Is it possible to configure SSMS to show the query time with millisecond resolution? ...
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Access multiple elements of list knowing their index

I need to choose some elements from the given list, knowing their index. Let say I would like to create a new list, which contains element with index 1, 2, 5, from given list [-2, 1, 5, 3, 8, 5, 6]. What I did is: ...
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How to view UTF-8 Characters in VIM or Gvim

I work on webpages involving Non-English scripts from time to time, most of them uses utf-8 charset, VIM and Gvim does not display UTF-8 Characters correctly. ...
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Easiest way to convert a List to a Set in Java

What is the easiest way to convert a List to a Set in Java? 16 Answers 16 ...
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How to filter files when using scp to copy dir recursively?

I need to copy all the .class files from server to local with all dir reserved. e.g. server:/usr/some/unknown/number/of/sub/folders/me.class will be /usr/project/backup/some/unknown/number/of/sub/folders/me.class the problem is, there are many other useless files such as .svn-base files that i d...
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How do I look inside a Python object?

I'm starting to code in various projects using Python (including Django web development and Panda3D game development). 22 ...
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What is the MySQL JDBC driver connection string?

I am new to JDBC and I am trying to make a connection to a MySQL database. I am using Connector/J driver, but I cant find the JDBC connection string for my Class.forName() method. ...