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LINQ: Select an object and change some properties without creating a new object

I want to change some properties of a LINQ query result object without creating a new object and manually setting every property. Is this possible? ...
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How to get unique values in an array

How can I get a list of unique values in an array? Do I always have to use a second array or is there something similar to java's hashmap in JavaScript? ...
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How can I create a unique constraint on my column (SQL Server 2008 R2)?

I have SQL Server 2008 R2 and I want to set a unique column. 4 Answers 4 ...
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Internet Explorer's CSS rules limits

I've read conflicting information regarding Internet Explorer's silly CSS limits. I am (think I am) understanding that you can only have 31 <style> and <link> tags (combined), and that each sheet can have up to 31 @import -s (so 31 <link> -s, each to 31 @import -s is fine, a...
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Choosing between std::map and std::unordered_map [duplicate]

Now that std has a real hash map in unordered_map , why (or when) would I still want to use the good old map over unordered_map on systems where it actually exists? Are there any obvious situations that I cannot immediately see? ...
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Recursion or Iteration?

Is there a performance hit if we use a loop instead of recursion or vice versa in algorithms where both can serve the same purpose? Eg: Check if the given string is a palindrome. I have seen many programmers using recursion as a means to show off when a simple iteration algorithm can fit the bill. D...
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Learning Regular Expressions [closed]

I don't really understand regular expressions. Can you explain them to me in an easy-to-follow manner? If there are any online tools or books, could you also link to them? ...
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Print commit message of a given commit in git

I need a plumbing command to print the commit message of one given commit - nothing more, nothing less. 6 Answers ...
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Tetris-ing an array

Consider the following array: 16 Answers 16 ...
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How to sleep for five seconds in a batch file/cmd [duplicate]

Windows's Snipping tool can capture the screen, but sometimes I want to capture the screen after five seconds, such as taking an image being displayed by the webcam. (Run the script and smile at the camera, for example.) ...