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Create a custom event in Java

...intln("Hello there..."); } } class Test { public static void main(String[] args) { Initiater initiater = new Initiater(); Responder responder = new Responder(); initiater.addListener(responder); initiater.sayHello(); // Prints "Hello!!!" and "Hello there.....
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What is the difference between an interface and a class, and why I should use an interface when I ca

...d MyOtherClass why wouldn't you simply call aClass.WriteLog() why add that extra step. The implementation of WriteLog() would remain different for each of the classes but you already have the object so why pass it to a handler class? – Zach M. Dec 19 '14 at 19...
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What is the use case of noop [:] in bash?

...can discover that : ignores them. Mostly, you are just making the shell do extra work in expanding * to a list of files in the current directory; it won't actually affect how the script works. – chepner Nov 5 '14 at 14:48 ...
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How to print the values of slices

..., that is []*Project (instead of []Project), you are better off defining a String() method in order to display exactly what you want to see (or you will see only pointer address). See this play.golang example. share ...
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Biggest differences of Thrift vs Protocol Buffers?

...tocol Buffers allow "extensions" - you can extend an external proto to add extra fields, while still allowing external code to operate on the values. There is no way to do this in Thrift I find Protocol Buffers much easier to read Basically, they are fairly equivalent (with Protocol Buffers slight...
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Can table columns with a Foreign Key be NULL?

...otherwise I would get a constraint violation error (as opposed to an empty string). share | improve this answer | follow | ...
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Move assignment operator and `if (this != &rhs)`

...re this implementation could be problematic. The cost of the first is two extra stores. The cost of the second is a test-and-branch. Both work. Both meet all of the requirements of Table 22 MoveAssignable requirements in the C++11 standard. The third also works modulo the non-memory-resource-co...
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Git clone particular version of remote repository

...ich means its currently not attached to any branch - then you'll have some extra work to merge new commits to an actual branch. Example: $ git log commit 89915b4cc0810a9c9e67b3706a2850c58120cf75 Author: Jardel Weyrich <suppressed> Date: Wed Aug 18 20:15:01 2010 -0300 Added a custom e...
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“Templates can be used only with field access, property access, single-dimension array index, or sin

... this: class TrainerViewModel { private Trainer _trainer; public string ShortDescription { get { return _trainer.Description.ToString().Substring(0, 100); } } public TrainerViewModel(Trainer trainer) { _trainer = trainer; } }...
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How to read multiple text files into a single RDD?

...t is only python syntax. The Scala equivalent would be sc.textFile(files.mkString(",")) – Davos Jun 25 '17 at 15:09 add a comment  |  ...