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Rails: Adding an index after adding column
Suppose I created a table table in a Rails app. Some time later, I add a column running:
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Mixins vs. Traits
What is the difference between Mixins and Traits?
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git: difference between “branchname” and “refs/heads/branchname”
Best to be explained at an example: I am on branch 0.58 of repository and this his how I pull:
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MySQL CONCAT returns NULL if any field contain NULL
I have following data in my table "devices"
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Why is LINQ JOIN so much faster than linking with WHERE?
I've recently upgraded to VS 2010 and am playing around with LINQ to Dataset. I have a strong typed dataset for Authorization that is in HttpCache of an ASP.NET WebApplication.
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How do I get cURL to not show the progress bar?
I'm trying to use cURL in a script and get it to not show the progress bar.
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Bash: If/Else statement in one line
I am trying to check if a process (assume it is called some_process ) is running on a server. If it is, then echo 1, otherwise echo 0.
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UIButton remove all target-actions
I have added multiple target-action-forControlEvents: to a UIButton. I'd like to remove all of these in one go without deallocating anything. I will then set new targets.
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Using variables inside a bash heredoc
I'm trying to interpolate variables inside of a bash heredoc:
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Spring: Why do we autowire the interface and not the implemented class?
Example
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