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Interface vs Base class
...nto a
rigid hierarchy.
Interfaces enable safe, powerful functionality enhancements via the
wrap- per class idiom. If you use
abstract classes to define types, you
leave the programmer who wants to add
functionality with no alternative but
to use inheritance.
Moreover, you can...
Why is Thread.Sleep so harmful
... while-construct (demo and answer, nice blog-entry)
EDIT:
I would like to enhance my answer:
We have 2 different use-cases:
We are waiting because we know a
specific timespan when we should continue (use Thread.Sleep, System.Threading.Timer or alikes)
We are waiting because some co...
Get an object properties list in Objective-C
...error on primitives, such as int. Please see my answer below for slightly enhanced version of this same thing.
– jpswain
Dec 21 '11 at 18:02
1
...
How persistent is localStorage?
...l, and Local Storage, in particular, are accessible only from client side.
Enhanced capacity (official for cookies is 4 KB) to more than 5MB per domain (Firefox, Google Chrome, and Opera and 10MB in IE).
So yes, your assumption is correct.
...
Why does Hibernate require no argument constructor?
...on't have a public no-arg constructor, but only by running in a so-called "enhanced" mode which is available only on certain VMs. (See the link for details.) Hibernate's designers surely chose to maintain compatibility with all VMs and so avoids such tricks, and uses the officially supported reflect...
【软著】软件著作权证书申请流程及注意事项，模板分享 - App Inventor 2 中...
...nventor 会基于 .yail 文件和其他资源生成 .apk 文件，供用户下载并在 Android 设备上运行。
.yail 文件的作用：
中间表示： .yail 文件作为中间表示语言，帮助 App Inventor 编译器将高层次的图形化编程语言转换成低层次的机器可执行...
SQLite Concurrent Access
...eckpointed.
BEGIN CONCURRENT - link to detailed doc
The BEGIN CONCURRENT enhancement allows multiple writers to process write transactions simultanously if the database is in "wal" or "wal2" mode, although the system still serializes COMMIT commands.
When a write-transaction is opened with "BEGIN ...
How do you design object oriented projects? [closed]
...guages like C and Pascal) leads to systems that are difficult to maintain (enhance and debug) simply because you never know what other place in the system changes the data. OOP isn't about data; OOP is about behaviour. It is an important distinction.
– Dave Jarvis
...
C++ static virtual members?
... pretty detailed answer, I'd like to add an alternative, since I think his enhanced implementation is overcomplicated.
We start with an abstract base class, that provides the interface for all the object types:
class Object
{
public:
virtual char* GetClassName() = 0;
};
Now we need an actual...
What exactly is metaprogramming?
...implementation is to create a "domain specific language" which is a way of enhancing a programming language to accomplish a specific task. It can be incredibly powerful if done correctly. Ruby on Rails is a good example of this sort of programming.
If you interested in exploring this method, ch...