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java-web项目加密运行（支持window/linux）

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JAVA项目加密(Windows/Linux/Mac/龙芯系统)

视频讲解-Java调用DLL

python搭建微信公众平台

python基于新浪sae开发的微信公众平台，实现功能：输入段子---回复笑话输入开源+文章---发送消息到开源中国输入快递+订单号---查询快递信息输入天气---查询南京最近五天天气状况输入微博热点---回复微博当前热门话题输入电影+名称---回复百度云盘中搜索的链接具体实现代码：#-*-coding:utf-8-*-importhashlibimportwebimportlxmlimporttimeimportosimporturllib2,jsoni

系统 2019-09-27 17:38:18 1876

Python

python代码 if not x: 和 if x is not None

代码中经常会有变量是否为None的判断，有三种主要的写法：第一种是`ifxisNone`；第二种是`ifnotx：`；第三种是`ifnotxisNone`（这句这样理解更清晰`ifnot(xisNone)`）。如果你觉得这样写没啥区别，那么你可就要小心了，这里面有一个坑。先来看一下代码：>>>x=1>>>notxFalse>>>x=[1]>>>notxFalse>>>x=0>>>notxTrue>>>x=[0]#Youdon'twanttofallinth

系统 2019-09-27 17:38:05 1876

Python

如何在Python中编写并发程序

GIL在Python中,由于历史原因(GIL),使得Python中多线程的效果非常不理想.GIL使得任何时刻Python只能利用一个CPU核,并且它的调度算法简单粗暴:多线程中,让每个线程运行一段时间t,然后强行挂起该线程,继而去运行其他线程,如此周而复始,直到所有线程结束.这使得无法有效利用计算机系统中的"局部性",频繁的线程切换也对缓存不是很友好,造成资源的浪费.据说Python官方曾经实现了一个去除GIL的Python解释器,但是其效果还不如有GIL

系统 2019-09-27 17:37:58 1876

Python

Python中的self用法详解

在Python类中规定，函数的第一个参数是实例对象本身，并且约定俗成，把其名字写为self。其作用相当于java中的this，表示当前类的对象，可以调用当前类中的属性和方法。class是面向对象的设计思想，instance（也即是object，对象）是根据class创建的。一个类（class）应该包含数据和操作数据的方法，通俗来讲就是属性和函数（即调用方法）。类class中为啥用使用self？在类的代码（函数）中，需要访问当前的实例中的变量和函数，即访问I

系统 2019-09-27 17:37:38 1876

编程技术

文件输入流 FileInputStream

文件输入流FileInputStream博客分类：javaIOJavaFileInputStream类从文件中读取数据。它有以下构造方法：FileInputStream(Filefile)--------参数file指定文件的数据源FileInputStream(Stringname)--------参数name指定文件数据源。在参数name中包含了文件路径信息。下面这个FileInputStreamTester类读取test.txt文件中的内容。Java

系统 2019-08-29 23:49:25 1876

编程技术

WindowBuilder Pro,SWT Designer，GWT Designer

WindowBuilderProv6.2.0这是目前最新的版本，支持Eclipse2.1,Eclipse3.0,Eclipse3.1,Eclipse3.2和Eclipse3.3,此软件包含RCPDeveloper,WindowBuilder,SWTDesigner,SwingDesigner,GWTDesigner,WindowTester,HelpComposer.三、注册和激活(使用注册机)WindowBuilderPro,SWTDesignerV6.

系统 2019-08-29 23:48:54 1876

编程技术

ActionScript 3.0系列教程:Document Class特色

DocumentClass，中文直译为“文档类”。顾名思义，就是和文档绑在一起的类。文档是啥？就是要和这个类绑在一起的Fla文件。[1b]什么用处[/1b]？这个玩意儿根本目的就是想把AS代码和Flash设计完全剥离。从此，Fla里面只管设计，逻辑代码全部由外部的类来包办。对于设计者和新手，黑羽可以打个比方，就好比[1b]三步走：[/1b]1.把Fla里面所有代码集中到第一帧，2.再把第一帧里的代码拷贝到外部的一个as文件里。3.再按照AS3.0的形式，把

系统 2019-08-29 23:42:29 1876

编程技术

应用Rails进行REST 开发(一)

前言Http协议除了get和post，还可以做更多的事情，一直以来，很多的开发人员都忘了这一点。但是，如果你知道浏览器其实只支持get和post,那么你就不会感到惊奇了。get和post是http请求从客户端传到服务器端的两个方法。除了这两个，http协议还知道put和delete方法，这两个方法告诉服务器创建或者删除一个WEB的资源。这个教程的目的，就是扩展开发人员的视线，去了解http协议的put和delete方法。我们常说的REST这个术语，精华就是

系统 2019-08-29 23:32:02 1876

编程技术

完整的简单层拖动代码

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