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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:
5 Answers
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How can I rollback a github repository to a specific commit?
... the one ahead of the commit I wanted to rollback. Cloned it locally. Then applied your recommendations on that copy, this way, I did not compromised my main branch...
– Gauthier Boaglio
Jun 1 '15 at 22:52
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Check if a variable is a string in JavaScript
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The Google JavaScript Style Guide says to never use primitive object wrappers.
Douglas Crockford recommended that primitive object wrappers be deprecated.
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Will Dart support the use of existing JavaScript libraries?
... ships a JS-interop library to use existing JavaScript code with your Dart app. Learn more here: https://www.dartlang.org/articles/js-dart-interop/
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Why did Rails4 drop support for “assets” group in the Gemfile
... live compile anyway. What does "support" amount to here. afaik my Rails 3 app had a line in env/prod.rb which loaded assets just on development. If that is all, can we just add it anyway?
– Karthik T
May 25 '14 at 2:54
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Installing MSBuild 4.0 without Visual Studio 2010
...ET 4.0 Framework from Microsoft at this link . Unfortunately, it doesn't appear to have installed MSBuild with this download (or at least I can't find it).
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How does JavaFX compare to WPF? [closed]
... have references to nodes and controls).
One difference to WPF is that it appears that the FXML is not compiled into an intermediate binary representation like BAML. I haven't noticed any performance issues yet but have not used the system extensively. I have noticed though, that FXML usually tends...
How to do a PUT request with curl?
...YOUR_URI"
b) If sending raw data as json:
curl -X PUT -H "Content-Type: application/json" -d '{"key1":"value"}' "YOUR_URI"
c) If sending a file with a POST request:
curl -X POST "YOUR_URI" -F 'file=@/file-path.csv'
Alternative solution:
You can use the POSTMAN app from Chrome Store to get ...
How to create a WPF Window without a border that can be resized via a grip only?
...on the Window (even without setting any transparency values) the border disappears and you can only resize via the grip.
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Width="640" Height="480"
Wind...
Get hostname of current request in node.js Express
...se you can use it in modules that do not run always inside context of HTTP app
– Radagast the Brown
Nov 21 '12 at 11:41
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