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Using a strategy pattern and a command pattern
...iple systems without requiring the details of a specific invocation to be known before execution.
As is typical for design patterns, they do not require all implementations to be identical in detail to bear the pattern name. Details can vary in implementation and in what data is encoded in the obj...
What's invokedynamic and how do I use it?
... the JVM and one of those cool features is invokedynamic. I would like to know what it is and how does it make reflective programming in Java easier or better?
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What are the rules about using an underscore in a C++ identifier?
...itional type names.
While using these names for your own purposes right now might not cause a problem, they do raise the possibility of conflict with future versions of that standard.
Personally I just don't start identifiers with underscores. New addition to my rule: Don't use double undersco...
Convert an array of primitive longs into a List of Longs
...
Since Java 8 you can now use streams for that:
long[] arr = {1,2,3,4};
List<Long> list = Arrays.stream(arr).boxed().collect(Collectors.toList());
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Understanding the difference between Object.create() and new SomeFunction()
...e have two objects a and b.
var a = new Object();
var b = new Object();
Now, suppose a has some methods which b also wants to access. For that, we require object inheritance (a should be the prototype of b only if we want access to those methods). If we check the prototypes of a and b then we wil...
When should you use a class vs a struct in C++?
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Now that it is several years later and C++11 is supported by all the major compilers, Lambdas make this even more concise.
– user439793
Aug 14 '14 at 1:07
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What is the difference between map and flatMap and a good use case for each?
...ct
res0: Array[String] = Array("Roses are red", "Violets are blue")
Now, map transforms an RDD of length N into another RDD of length N.
For example, it maps from two lines into two line-lengths:
rdd.map(_.length).collect
res1: Array[Int] = Array(13, 16)
But flatMap (loosely speaking...
RESTful Services - WSDL Equivalent
...iv.com/untangled/2008/rest-apis-must-be-hypertext-driven
My Conclusion : Now a Days, WADL is more common that Rest and Integration Frameworks like Camel CXF already supports WADL ( generate and consume ), because it is similar to WSDL, therefore most easy to understand in this migration process ( ...
Handler vs AsyncTask vs Thread [closed]
... and AsyncTask. These classes do most of the work for us, we only need to know which methods to override.
The difference between Handler and AsyncTask is: Use AsyncTask when Caller thread is a UI Thread.
This is what android document says:
AsyncTask enables proper and easy use of the UI thread....
When should I use double instead of decimal?
..., try reading the oft-quoted article What Every Computer Scientist Should Know About Floating-Point Arithmetic.
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