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How does Java handle integer underflows and overflows and how would you check for it?
...) & (left ^ (left - right))) < 0;
}
}
(you can substitute int by long to perform the same checks for long)
If you think that this may occur more than often, then consider using a datatype or object which can store larger values, e.g. long or maybe java.math.BigInteger. The last one doe...
How do 20 questions AI algorithms work?
Simple online games of 20 questions powered by an eerily accurate AI.
5 Answers
5
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Deleting a resource using http DELETE
...
The RESTful web services cookbook is a great resource for this. By chance, its google preview show the page about DELETE (page 11):
The DELETE method is idempotent. This
implies that the server must return
response code 200 (OK) even if the
server deleted the resource in a
pre...
What does the 'Z' mean in Unix timestamp '120314170138Z'?
...iki/Coordinated_Universal_Time:
The UTC time zone is sometimes denoted by the letter Z—a reference to
the equivalent nautical time zone (GMT), which has been denoted by a Z
since about 1950. The letter also refers to the "zone description" of
zero hours, which has been used since 1920 (s...
When do you use the “this” keyword? [closed]
...here are several usages of this keyword in C#.
To qualify members hidden by similar name
To have an object pass itself as a parameter to other methods
To have an object return itself from a method
To declare indexers
To declare extension methods
To pass parameters between constructors
To internall...
Best practices for catching and re-throwing .NET exceptions
... used for exceptions over aggregated operations. For example, it is thrown by the ParallelEnumerable and Task classes of the CLR. Usage should probably follow this example.
– Aluan Haddad
Feb 27 '17 at 8:41
...
Hibernate throws MultipleBagFetchException - cannot simultaneously fetch multiple bags
...pporting JPA 2.0) should handle this. But otherwise you can work it around by annotating the collection fields with:
@LazyCollection(LazyCollectionOption.FALSE)
Remember to remove the fetchType attribute from the @*ToMany annotation.
But note that in most cases a Set<Child> is more appropr...
Why is a pure virtual function initialized by 0?
...design of C++, the first place to look is The Design and Evolution of C++, by Bjarne Stroustrup1:
The curious =0 syntax was chosen
over the obvious alternative of
introducing a new keyword pure or
abstract because at the time I saw
no chance of getting a new keyword
accepted. Had I sug...
MVC pattern on Android
...have the following:
You define your user interface in various XML files by resolution, hardware, etc.
You define your resources in various XML files by locale, etc.
You extend clases like ListActivity, TabActivity and make use of the XML file by inflaters.
You can create as many classes as you wi...
What is a loop invariant?
I'm reading "Introduction to Algorithm" by CLRS. In chapter 2, the authors mention "loop invariants". What is a loop invariant?
...