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What is the difference between atomic / volatile / synchronized?
...return counter++;
}
It basically reads value from memory, increments it and puts back to memory. This works in single thread but nowadays, in the era of multi-core, multi-CPU, multi-level caches it won't work correctly. First of all it introduces race condition (several threads can read the value...
Java: What is the difference between and ?
I am unable to understand the following text... Does it mean that <clinit> is for empty constructors? Why is important to have two different versions?
...
Why do this() and super() have to be the first statement in a constructor?
...ct those args inline as you are doing, or pass them in to your constructor and then pass them to super:
public MySubClassB extends MyClass {
public MySubClassB(Object[] myArray) {
super(myArray);
}
}
If the compiler did not enforce this you could do this:
public M...
Usage of forceLayout(), requestLayout() and invalidate()
I'm a bit confused about the roles of forceLayout() , requestLayout() and invalidate() methods of the View class.
6 ...
What's the difference between & and && in MATLAB?
What is the difference between the & and && logical operators in MATLAB?
7 Answers
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Difference between null and empty (“”) Java String
What is the difference between null and the "" (empty string)?
22 Answers
22
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How to trace the path in a Breadth-First Search?
... return path
# enumerate all adjacent nodes, construct a new path and push it into the queue
for adjacent in graph.get(node, []):
new_path = list(path)
new_path.append(adjacent)
queue.append(new_path)
print bfs(graph, '1', '11')
Another appro...
Benefits of prototypal inheritance over classical?
So I finally stopped dragging my feet all these years and decided to learn JavaScript "properly". One of the most head-scratching elements of the languages design is it's implementation of inheritance. Having experience in Ruby, I was really happy to see closures and dynamic typing; but for the li...
How to search and replace text in a file?
How do I search and replace text in a file using Python 3?
15 Answers
15
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How to fix “containing working copy admin area is missing” in SVN?
...aining-working.html
Check-out the folder "blabla" to a different location and then copy its .svn folder back into the original "blabla".
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