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Rails 3 check if attribute changed
...umentation is really good, but it lets you do things such as:
@user.street1_changed? # => true/false
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@UniqueConstraint and @Column(unique = true) in hibernate annotation
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148
As said before, @Column(unique = true) is a shortcut to UniqueConstraint when it is only a sin...
Installing PDO driver on MySQL Linux server
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On Ubuntu you should be able to install the necessary PDO parts from apt using sudo apt-get in...
Traverse all the Nodes of a JSON Object Tree with JavaScript
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Is GridFS fast and reliable enough for production?
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I use gridfs at work on one of our servers which is part of a price-comparing website with hon...
Python: Ignore 'Incorrect padding' error when base64 decoding
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Update just one gem with bundler
...es of possible side-effects.
Update
As @Tim's answer says, as of Bundler 1.14 the officially-supported way to this is with bundle update --conservative gem-name.
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JComboBox Selection Change Listener?
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162
It should respond to ActionListeners, like this:
combo.addActionListener (new ActionListener ...