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What's Alternative to Singleton
...h as Spring or Guice? (I believe Spring also is available for .NET as well now).
That way, the framework can hold a single copy of the configuration objects, and your beans (services, DAOs, whatever) don't have to worry about looking it up.
This is the approach I usually take!
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Technically what is the main difference between Oracle JDK and OpenJDK? [duplicate]
...ince I started to play with it for big toys, I started to notice random/unknown fatal error and crashes (with H.264 codecs, etc.), and it was a nightmare till then to get ride of system crash+fatal errors caused by OpenJDK.
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What does the Subversion status symbol “~” mean?
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It looks like you are right. It is a directory now without a .svn file. Any idea on how to fix that? Do I need to delete it from subversion and add it again?
– jergason
May 12 '09 at 15:47
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Does MySQL index foreign key columns automatically?
...5 seconds. Added an index on the fkey column, and things go under a second now.
– AbiusX
Feb 1 '16 at 23:14
Same exper...
How do I create a variable number of variables?
... # prints bar, because indices start at 0
lst.append('potatoes') # lst is now ['foo', 'bar', 'baz', 'potatoes']
For ordered sequences, lists are more convenient than dicts with integer keys, because lists support iteration in index order, slicing, append, and other operations that would require a...
Get name of property as a string
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With C# 6.0, this is now a non-issue as you can do:
nameof(SomeProperty)
This expression is resolved at compile-time to "SomeProperty".
MSDN documentation of nameof.
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In what cases will HTTP_REFERER be empty
I know it's possible to get an empty HTTP_REFERER. Under what circumstances does this happen? If I get an empty one, does it always mean that the user changed it? Is getting an empty one the same as getting a null one? and under what circumstances do I get that too?
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how to release localhost from Error: listen EADDRINUSE
...lt;port> 0.0.0.* LISTEN <pid>/<parent>
Now kill by pid:
kill -9 <pid>
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Authorize a non-admin developer in Xcode / Mac OS
... a standard user account for my daily tasks on Mac OS. Since upgrading to Snow Leopard I am asked to do the following when a program is run from within Xcode:
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undefined method `source_index' for Gem:Module (NoMethodError)
...gems version prior to 2.0.0, like 1.8.25 to get the functionality back for now. You can get a compatible version using gem update --system 1.8.25.
As a very important aside, Rails 2.3.5 needs to be updated to a minimum of 2.3.17. There are critical security vulnerabilities that open you up to some ...