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GROUP_CONCAT ORDER BY

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How to write multiple line property value using PropertiesConfiguration?

I have a properties file with a property with a List value (comma separated), how to write this property in a multi-line ? (backslash after the comma)? ...
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Parallel.ForEach vs Task.Run and Task.WhenAll

What are the differences between using Parallel.ForEach or Task.Run() to start a set of tasks asynchronously? 4 Answers ...
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Find the extension of a filename in Ruby

I'm working on the file upload portion of a Rails app. Different types of files are handled differently by the app. 4 Answ...
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How to sort the result from string_agg()

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What is the difference between t.belongs_to and t.references in rails?

What is the difference between t.references and t.belongs_to ? Why are we having those two different words? It seems to me they do the same thing? Tried some Google search, but find no explanation. ...
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How to ignore xargs commands if stdin input is empty?

Consider this command: 6 Answers 6 ...
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Specify pane percentage in tmuxinator project

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Rails: where does the infamous “current_user” come from?

I've been looking around recently into Rails and notice that there are a lot of references to current_user . Does this only come from Devise? and do I have to manually define it myself even if I use Devise? Are there prerequisites to using current_user (like the existence of sessions, users, etc)...
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Scala downwards or decreasing for loop?

In Scala, you often use an iterator to do a for loop in an increasing order like: 7 Answers ...