class FirstClass: pass class SecondClass: pass class ThirdClass: pass Instances = [] for ClassType in [FirstClass, SecondClass, ThirdClass]: Instances.append(ClassType()) print Instances 本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u1/35936/showart_346641.html
本文转自： http://www.alvestrand.no/objectid/ What is an object identifier?object identifiers are, basically, strings of numbers. They are allocated in a hierarchical manner, so that, for instance, the authority for "1.2.3" is the only one that can say what "1.2.3.4" means. They are used in a variety of protocols. The formal definition of OIDs comes from ITU-T recommendation X.208 (ASN.1), wh...
array convert to list: import java.util.Arrays; String[] classCheckbox = questionActionForm.getClassCheckbox(); List classIds = new ArrayList(); classIds = Arrays.asList(classCheckbox); set convert to list: Set classifications = question.getClassifications(); List classificationsList = new ArrayList(); classificationsList.addAll(classifications); 本文来自ChinaUnix博客，如果查看原文请点：...
objects are key to understanding object-oriented technology. Look around right now and you'll find many examples of real-world objects: your dog, your desk, your television set, your bicycle. Real-world objects share two characteristics: They all have state and behavior. Dogs have state (name, color, breed, hungry) and behavior (barking, fetching, wagging tail). Bicycles also have state ...
新年到了，祝大家新年快乐！ 这几天看了下pil,然后也google下，写了个玩的，里面watermark那个函数根据 网上发的zope里那个改的，其他的自己写的，做成exe的时候老出错，后来我把 pil库换成1.1.6就没问题了。 [code] #-*- coding:GBK -*- #========================== #The work with a picture! #The MIT License #Emal:ghostwwl@gmail.com # edit by Ghostwwl #========================== import Image import ImageDraw im...
来源：http://www.json.org JSON(JavaScript object Notation) 是一种轻量级的数据交换格式。易于人阅读和编写。同时也易于机器解析和生成。它基于JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999的一个子集。 JSON采用完全独立于语言的文本格式，但是也使用了类似于C语言家族的习惯（包括C, C++, C#, Java, JavaScript, Perl, Python等）。这些特性使JSON成为理想的数据交换语言。 JSON建构于两...
More on Classes This section covers more aspects of classes that depend on using object references and the dot operator that you learned about in the preceding sections on objects: Returning values from methods. The this keyword. Class vs. instance members. Access control. Returning a Value from a Method A method returns to the code that invoked it when it comple...
objects A typical Java program creates many objects, which as you know, interact by invoking methods Through these object interactions, a program can carry out various tasks, such as implementing a GUI, running an animation, or sending and receiving information over a network. Once an object has completed the work for which it was created, its resources are recycled for use by other...
Today, I write my first java program with constructor. Though it was simple, but it was a new start. It named class b, and have only statement in it: System.out.println("class b"); I invocate(invoke) it in class a by a statement b cc=new b(); it run successful and worked correctly. In additional to, I write a new method in class b, it was invoked correctly. I have enjoy it. Haha. 本文来自Chi...
