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select * vs select column

If I just need 2/3 columns and I query SELECT * instead of providing those columns in select query, is there any performance degradation regarding more/less I/O or memory? ...
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Compare JavaScript Array of Objects to Get Min / Max

I have an array of objects and I want to compare those objects on a specific object property. Here's my array: 16 Answers ...
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Traversing text in Insert mode

While in Insert Mode in Vim, is there any way to traverse the text moving some characters forward and backward other than using the arrow keys? ...
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How to download source in ZIP format from GitHub?

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Why shouldn't all functions be async by default?

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Quicksort vs heapsort

Both quicksort and heapsort do in-place sorting. Which is better? What are the applications and cases in which either is preferred? ...
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Why and when to use Node.js? [duplicate]

Sorry if I'm a bit ambiguous, but I'm trying to understand the real advantages of using Node.js instead of other server-side language. ...
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How do you create a random string that's suitable for a session ID in PostgreSQL?

I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this? ...
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Mark parameters as NOT nullable in C#/.NET?

Is there a simple attribute or data contract that I can assign to a function parameter that prevents null from being passed in C#/.NET? Ideally this would also check at compile time to make sure the literal null isn't being used anywhere for it and at run-time throw ArgumentNullException . ...
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What is the best way to test for an empty string in Go?

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