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Pick a random value from an enum?

...esult of values() because each call copies an array. Also, don't create a Random every time. Keep one. Other than that what you're doing is fine. So: public enum Letter { A, B, C, //... private static final List<Letter> VALUES = Collections.unmodifiableList(Arrays.asList(values...
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ADB Install Fails With INSTALL_FAILED_TEST_ONLY

... Looks like you need to modify your AndroidManifest.xml Change android:testOnly="true" to android:testOnly="false" or remove this attribute. If you want to keep the attribute android:testOnly as true you can use pm install command with -t option, but you may n...
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How to get the name of enumeration value in Swift?

... As of Xcode 7 beta 5 (Swift version 2) you can now print type names and enum cases by default using print(_:), or convert to String using String's init(_:) initializer or string interpolation syntax. So for your example: enum City: Int { case Melbourne = 1, Chelyabinsk, Bursa } let city ...
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How can I get every nth item from a List?

I'm using .NET 3.5 and would like to be able to obtain every * n *th item from a List. I'm not bothered as to whether it's achieved using a lambda expression or LINQ. ...
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HashSet vs. List performance

...be better off using a List<T>. I did a test for this on my machine, and, well, it has to be very very small to get an advantage from List<T>. For a list of short strings, the advantage went away after size 5, for objects after size 20. 1 item LIST strs time: 617ms 1 item HASHSET strs t...
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How to commit my current changes to a different branch in Git [duplicate]

Sometimes it happens that I make some changes in my working directory, and I realize that these changes should be committed in a branch different to the current one. This usually happens when I want to try out new things or do some testing and I forget to create a new branch beforehand, but I don't ...
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How do you convert a DataTable into a generic list?

...ET 3.5, you can use DataTableExtensions.AsEnumerable (an extension method) and then if you really need a List<DataRow> instead of just IEnumerable<DataRow> you can call Enumerable.ToList: IEnumerable<DataRow> sequence = dt.AsEnumerable(); or using System.Linq; ... List<DataR...
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Fixing Sublime Text 2 line endings?

...les. // Valid values are 'system' (whatever the OS uses), 'windows' (CRLF) and // 'unix' (LF only). You are setting "default_line_ending": "LF", You should set "default_line_ending": "unix", share | ...
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Rearrange columns using cut

... For the cut(1) man page: Use one, and only one of -b, -c or -f. Each LIST is made up of one range, or many ranges separated by commas. Selected input is written in the same order that it is read, and is written exactly once. It ...
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How can I parse a time string containing milliseconds in it with python?

... Thanks docs.python.org/library/datetime.html : New in version 2.6: time and datetime objects support a %f format code which expands to the number of microseconds in the object, zero-padded on the left to six places. – ilkinulas Mar 30 '09 at 18:01 ...