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Function templates and static variables: Each instantiation of function template has its own copy of local static variables. For example, in the following program there are two instances: void fun(int ) and void fun(double ). So two copies of static…
如果Django顶层目录中没有templates的话,就自己新建一个Directory ,这个文件是存放html文件的 1)如果在views里面用render(request,"")引入的时候引入不了,去setting 里面检查TEMPLATES下面 'DIRS': [os.path.join(BASE_DIR, 'templates')],路径配置是否正确 2)静态文件static:里面存放js文件,setting 里面需要配置 STATIC_URL = '/static/' #别名…
1.模板文件 # =======templates配置======= if os.path.exists(os.path.join(BASE_DIR, 'templates')) is False: os.mkdir(os.path.join(BASE_DIR, 'templates')) TEMPLATES = [ { # 模板引擎,内置的模板引擎有: # 1. 'django.template.backends.django.DjangoTemplates' # 2. 'django.tem…
log.info "starting" // we use class to create objects of a class Planet p1 = new Planet() Planet p2 = new Planet() Planet p3 = new Planet() //Planet.name = "Pluto" illegal Planet.shape = "Circle" p1.name = "earth" /…
创建APP命令 python manage.py startapp myapp app组成介绍 如上图,在终端中展示树状结构-- windows为 tree /f macOS为 tree 注册APP settings.py中添加路径以注册 编辑urls 从app文件夹导入views 规定1个url,对应view中的1个函数 编辑app目录下的views 导入HttpResponse函数 函数所属位置很有意思,叫django.shortcuts,而不是django.views 新建自定义函数,规定…
function MyClass () { // constructor function var privateVariable = "foo"; //NO:obj.privateVariable, MyClass.privateVariable; PS:不属于instance,只能在内部使用: this.publicVariable = "bar"; //YES:obj.publicVariable; No:MyClass.publicVariable; thi…
Java编程思想笔记(一)--static 看<Java编程思想>已经有一段时间了,一直以来都把笔记做在印象笔记上,今天开始写博客来记录. 第一篇笔记来写static关键字. static static表示"全局"或者"静态"的意思,用来修饰成员变量和成员方法,也可以形成静态static代码块,但是Java语言中没有全局变量的概念. 被static修饰的成员变量和成员方法独立于该类的任何对象.也就是说,它不依赖类特定的实例,被类的所有实例共享. 只要这个…
Django version: 1.9 Python versrion: 3.5.2 这几天Django配置静态文件(本例是要加载index.css), 总是不对,最后终于试对了,这里记录下,方便以后查阅 最后实在没办法把Django1.9的官方文档下载下来(网页版),仔细的阅读了下相关的章节. 首先看下项目的结构图(pycharm2016 professional): 1.首先在INSTALLED_APPS中要有'django.contrib.staticfiles' INSTALLED_AP…
extraction from The C++ Programming Language, 4th. edition, Bjarne Stroustrup If no initializer is specified, a global, namespace, local static, or static member (collectively called static objects) is initialized to {} of the appropriate type. We cl…
获得20条news 先实现,再提取到business 层. The static Keyword You can have a local variable retain its value through multiple invocations of a method by placing the keyword static in front of the variable's declaration. Remember that static or local variables can…