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Can hash tables really be O(1)?
...As well as the above, if you are using immutable objects as your keys e.g. Java Strings, having calculated the hash once, you can remember it and not have to calculate it again. On the other hand, you can't usually rely on the hash to tell if two keys are equal once you have found the right bucket,...
How to detect if multiple keys are pressed at once using JavaScript?
I'm trying to develop a JavaScript game engine and I've came across this problem:
13 Answers
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SOAP vs REST (differences)
... code-on-demand supplied by the server itself, the classical example being JavaScript code used to drive the interaction with another service on the client-side.
I think these are the crucial points to understand what REST is about, and how it differs from SOAP:
REST is protocol independent. It's...
Why does one use dependency injection?
...eless, dependency injection is essential for statically typed code such as Java or C#.
And...
It should also be noted that an object can only properly fulfill its purpose at runtime, if all its dependencies are available, so there is not much use in setting up property injection. In my opinion, all...
Spring DAO vs Spring ORM vs Spring JDBC
... (annotations on DAOs & entities + spring configuration, be it xml- or java-based), decides the implementation technology, be it JPA (SQL) or redis, hadoop, etc. (NOSQL).
If you follow the naming conventions defined by spring for the finder method names, you don't even need to provide the quer...
Can you explain the HttpURLConnection connection process?
...penConnection creates a new connection object. From the URL.openConnection javadocs:
A new connection is opened every time by calling the openConnection method of the protocol handler for this URL.
The connection is established when you call openConnection, and the InputStream, OutputStream, o...
Why is volatile not considered useful in multithreaded C or C++ programming?
...hough it repeated checks the bool. This behavior is allowed by the c++0x, java, and c# memory models. In practice this would never occur as the busy thread most likely insert a memory barrier somewhere, after which it will see the change to the bool.
– deft_code
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Why all the Active Record hate? [closed]
...ot like the pattern.
At first sight it can sound pretty good. Some modern Java tools like Spring Roo uses this pattern.
For me, the real problem is just with OOP concern. AR pattern forces you in some way to add a dependency from your object to infraestructure objects. These infraestructure object...
Using Kafka as a (CQRS) Eventstore. Good idea?
...urce complete microservice platform available which is coming back to pure Java roots:
https://github.com/networknt
If you wonder about performance, you can compare yourself with existing benchmark suite.
https://github.com/networknt/microservices-framework-benchmark
Don't use Kafka at all :-)) ...
How is the fork/join framework better than a thread pool?
...join work as in the example you are describing here ? Could you show some Java code which would make fork and join steal work the way you describe it ? thanks
– Marc
Jul 13 '12 at 15:31
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