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How to properly compare two Integers in Java?
...ystem.out.println(x == y);
is guaranteed to print false. Interning of "small" autoboxed values can lead to tricky results:
Integer x = 10;
Integer y = 10;
System.out.println(x == y);
This will print true, due to the rules of boxing (JLS section 5.1.7). It's still reference equality being used,...
How much faster is C++ than C#?
... more advanced JIT optimizations being complicated to implement, and the really cool ones are only arriving just now.
So C++ is faster, in many cases. But this is only part of the answer. The cases where C++ is actually faster, are highly optimized programs, where expert programmers thoroughly opti...
How to decide when to use Node.js?
...marizing what's awesome about Node.js. My feeling is that Node.js is especially suited for applications where you'd like to maintain a persistent connection from the browser back to the server. Using a technique known as "long-polling", you can write an application that sends updates to the user in ...
Start / Stop a Windows Service from a non-Administrator user account
...(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
It lists all the permissions each User / Group on this computer has with regards to .
A description of one part of above command is as follows:
D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)
It has the default owner, default group, and it has...
Java: difference between strong/soft/weak/phantom reference
I have read this article about the topic, but I don't really understand it.
Please give me some advice along with examples when describing the concepts.
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Can I use view pager with views (not with fragments)
...
you dont need to cast to ViewPager at all as you are dealing with the ViewGroup interface
– Dori
Sep 1 '15 at 17:02
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What are the differences between Clojure, Scheme/Racket and Common Lisp?
I know they are dialects of the same family of language called lisp, but what exactly are the differences? Could you give an overview, if possible, covering topics such as syntax, characteristics, features and resources.
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Split List into Sublists with LINQ
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GroupBy doesn't return anything until it's enumerated all elements. That's why it's slow. The lists OP wants are contiguous, so a better method could yield the first sublist [a,g,e] before enumerating any more of the original list.
– Colonel Panic
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Graph Algorithm To Find All Connections Between Two Arbitrary Vertices
...d with a depth-first search of the graph. The depth-first search will find all non-cyclical paths between two nodes. This algorithm should be very fast and scale to large graphs (The graph data structure is sparse so it only uses as much memory as it needs to).
I noticed that the graph you specifie...
Explain the use of a bit vector for determining if all characters are unique
...ge for bits. Every bit in integer value can be treated as a flag, so eventually int is an array of bits (flag). Each bit in your code states whether the character with bit's index was found in string or not. You could use bit vector for the same reason instead of int. There are two differences betwe...