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Java heap terminology: young, old and permanent generations?
...nt generation.
I like the descriptions given for each space in Oracle's guide on JConsole:
For the HotSpot Java VM, the memory
pools for serial garbage collection
are the following.
Eden Space (heap): The pool from which memory is initially allocated
for most objects.
Survivor S...
Understanding prototypal inheritance in JavaScript
...u do new Car() the function drive() will be created again). Or different said the first uses the prototype to store the function and the second the constructor. The lookup for functions is constructor and then prototype. So for your lookup of Drive() it finds it regardless if it is in the constructo...
Difference between DTO, VO, POJO, JavaBeans?
...y can be passed around as a single bean object instead of as multiple individual objects. A JavaBean is a Java Object that is serializable, has a nullary constructor, and allows access to properties using getter and setter methods.
In order to function as a JavaBean class, an object class must ...
How to search a specific value in all tables (PostgreSQL)?
...
How is this a valid solution for any database that's sufficiently large that you can't dump it to your disk?
– Govind Parmar
Mar 6 '19 at 17:21
...
Difference between CC, gcc and g++?
... the answer is platform specific in part, and generic in part.
The big divide is between the C compilers and the C++ compilers. The C++ compilers will accept C++ programs and will not compile arbitrary C programs. (Although it is possible to write C in a subset that is also understood by C++, man...
Is GridFS fast and reliable enough for production?
I develop a new website and I want to use GridFS as storage for all user uploads, because it offers a lot of advantages compared to a normal filesystem storage.
...
How does git compute file hashes?
... the answer by @Leif Gruenwoldt and detailing what is in the reference provided by @Leif Gruenwoldt
Do It Yourself..
Step 1. Create an empty text document (name does not matter) in your repository
Step 2. Stage and Commit the document
Step 3. Identify the hash of the blob by executing gi...
Hg: How to do a rebase like git's rebase
...ave an indelible trace, and rebasing and other history editing techniques hide that.
Now go pick VonC's answer while I put my soapbox away. :)
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Configuring Log4j Loggers Programmatically
...e additivity flag).
If you need to know how logging works and how is decided where logs are written read this manual for more infos about that.
In Short:
Logger fizz = LoggerFactory.getLogger("com.fizz")
will give you a logger for the category "com.fizz".
For the above example this means tha...
Is a Python list guaranteed to have its elements stay in the order they are inserted in?
...plicitly made to do so. stacks and queues are both types of lists that provide specific (often limited) behavior for adding and removing elements (stacks being LIFO, queues being FIFO). Lists are practical representations of, well, lists of things. A string can be thought of as a list of characters,...