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What does “dereferencing” a pointer mean?
...ecause of that error in
the code is a failed dereference
operation. In Java the incorrect
dereference will be flagged politely
by the runtime system. In compiled
languages such as C, C++, and Pascal,
the incorrect dereference will
sometimes crash, and other times
corrupt memory in so...
Why is an int in OCaml only 31 bits?
...er takes place. OCaml is not an object-oriented language like Smalltalk or Java are. There is never any reason to retrieve the methods table of an OCaml int.
– Pascal Cuoq
Oct 3 '13 at 23:06
...
How can I record a Video in my Android App.?
...:layout_weight="1" >
</SurfaceView>
Your Main Activity: Video.java
public class Video extends Activity implements OnClickListener,
SurfaceHolder.Callback {
private static final String TAG = "CAMERA_TUTORIAL";
private SurfaceView mSurfaceView;
private SurfaceHolder mHolder;
priva...
How to fix “Headers already sent” error in PHP
...ent as Latin-1) or similar "garbage".
In particular graphical editors and Java based IDEs are oblivious to its
presence. They don't visualize it (obliged by the Unicode standard).
Most programmer and console editors however do:
There it's easy to recognize the problem early on. Other editors may...
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
...
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...