class

php源码建博客4--实现MVC结构微型框架

由 十年热恋 提交于 2020-02-08 00:36:07
主要： 常量优化路径 自动加载类 优化入口文件 安全访问项目目录 --------------文件结构：-------------------------------------- blog├─App│ ├─Model 模型│ │ └─UserModel.class.php 用户模型类 │ ├─View 视图│ │ ├─Back后台│ │ │ └─Index│ │ │ └─index.html 后台首页面│ │ └─Home前台│ │ └─User 用户视图目录│ │ └─login.html 登录表单页面│ ├─Controller 控制器│ │ ├─Back后台│ │ │ └─IndexController.class.php 后台首页控制器│ │ └─Home前台│ │ └─UserController.class.php 用户控制器├─Public 静态公共文件（js,css,images）│ ├─Plugins 插件│ │ └─layui 前端框架插件│ ├─Back后台│ │ ├─js/ js文件│ │ ├─css/ css样式文件│ │ └─image img图片 │ └─Home前台│ ├─js/ js文件│ ├─css/ css样式文件│ └─image img图片 ├─Frame 公共使用的类│ ├─BaseModel.class.php 数据库连接类│ ├

idea使用git从远程仓库Clone项目

由 别说谁变了你拦得住时间么 提交于 2020-02-07 10:10:12
1·在软件主界面选择Check out from Version Control——Git 2·添加远程仓库的URL，点击Clone按钮 注意：可以点击Test测试链接地址是否正确 3·如果项目过大需要耐心等待一会，这样就完成了Clone操作 </div> <link href="https://csdnimg.cn/release/phoenix/mdeditor/markdown_views-b6c3c6d139.css" rel="stylesheet"> <div class="more-toolbox"> <div class="left-toolbox"> <ul class="toolbox-list"> <li class="tool-item tool-active is-like "><a href="javascript:;"><svg class="icon" aria-hidden="true"> <use xlink:href="#csdnc-thumbsup"></use> </svg><span class="name">点赞</span> <span class="count"></span> </a></li> <li class="tool-item tool-active is-collection "><a href="javascript

problems when extending a PHP Class

由 假装没事ソ 提交于 2020-02-07 02:38:11
问题 I have 2 classes (2 files) db.class.php user.class.php I want to use some functions from db.class.php : db.class.php Class DBManager { /** all functions goes here ...*/ } $DB = new DBManager(); The content of user.class.php is: Class User extends DBManager { function User() { } function Total($table) { $query = $DB->Execute("SELECT * FROM $table"); $total = $DB->NumRows($query); return $total; } } $User = new User(); When I want to use my new function total($table) I get 2 errors: Undefined

模板显式、隐式实例化和（偏）特化、具体化的详细分析

由 心不动则不痛 提交于 2020-02-06 05:32:32
最近看了<The C++ Programing Language>看到了模板的特化，突然想起来<C++ Primer>上说的显式具体化、隐式具体化、特化、偏特化、具体化等概念弄得头晕脑胀，我在网上了找了好多帖子，才把概念给理清楚。 一下是我把再网上找的资料整理一下。 看着这么多叫法，其实就是三种。 1. 显示实例化 2. 隐式实例化 3. 特化(=具体化)、偏特化 一、实例化 1.显示、隐式实例化 什么是实例化：一个通过使用具体值替换模板参数，从模板产生的普通类，函数或者成员函数的过程。 显示实例化：通过名字可见，就是清楚的表明你要实例化的类型 隐式实例化：通过编译器自己推测判断要实例化的类型。 比如一个模板： template<class T> //函数模板实现 void swap(T &a, T &b) { T temp; temp = a; a = b; b = temp; } a. 显示实例化 template void swap<int>(); // 无须给该函数重新编写函数体，这只是个声明 为什么要显示实例化？ 主要是 提高效率， 当显式实例化模板时，在使用模板之前，编译器根据显式实例化指定的类型生成模板实例，这样就相当于本程序里面有个一 void swap(int &a, int &b) { int temp; temp = a; a = b; b = temp; }

Python missing image

由 蹲街弑〆低调 提交于 2020-02-05 13:08:09
问题 So I want to create a window with a displayed image (from a specific file) and single button to close the window. So far it shows the window, resizes the window to fit the the image, but doesn't show the image itself. Here's what I have so far from Tkinter import * import Image import ImageTk class MyApp: def __init__(self, rData): self.cont1 = Frame(rData) self.cont1.pack(side="top", padx=5, pady=5) self.button1 = Button(rData) self.button1["text"]= "Exit" self.button1["background"] = "red"

Python missing image

由 非 Y 不嫁゛ 提交于 2020-02-05 13:06:31
问题 So I want to create a window with a displayed image (from a specific file) and single button to close the window. So far it shows the window, resizes the window to fit the the image, but doesn't show the image itself. Here's what I have so far from Tkinter import * import Image import ImageTk class MyApp: def __init__(self, rData): self.cont1 = Frame(rData) self.cont1.pack(side="top", padx=5, pady=5) self.button1 = Button(rData) self.button1["text"]= "Exit" self.button1["background"] = "red"

Python missing image

由 你。 提交于 2020-02-05 13:06:13
问题 So I want to create a window with a displayed image (from a specific file) and single button to close the window. So far it shows the window, resizes the window to fit the the image, but doesn't show the image itself. Here's what I have so far from Tkinter import * import Image import ImageTk class MyApp: def __init__(self, rData): self.cont1 = Frame(rData) self.cont1.pack(side="top", padx=5, pady=5) self.button1 = Button(rData) self.button1["text"]= "Exit" self.button1["background"] = "red"

Is there a CompareTo method in C++ similar to Java where you can use > < = operations on a data type

由 爷，独闯天下 提交于 2020-02-05 06:57:06
问题 I know that in java there is a compareTo method that you can write in a class that will compare two variables and return a value -1, 1, or 0 signifing greater than, less than, and equal to operations. Is there a way to do this in C++? Background: Im creating a modified string class in which it takes a string and an arraylist. I want to be able to compare the string in a traditional fashion where if its lower in the alphabet it will be less than, than higher it would be greater than. Than i

Excel VBA: Overflow error from too many undestroyed objects?

由 安稳与你 提交于 2020-02-05 04:05:34
问题 when performing optimization tasks on a large dataset I receive an overflow runtime error 6 from time to time (generally after 1 hour or 2). The error goes away when I restart my macro from where it stopped, i.e. launch the macro again from the point where the error occured. Could an overflow error be related to some issue of having created too many objects that are not destroyed properly after use? Here's a (simplified version) of my container class, which is used destroyed (via Set ... =

Registry pattern with __init_subclass__ and sub-classable registry

由 本秂侑毒 提交于 2020-02-05 03:17:06
问题 I want to create a settings registry. I also want to be able to group settings in macro-categories. The following simplified example works with a single registry: class RegistryHolder: registry = {} def __init_subclass__(cls, setting_name=None, **kwargs): super().__init_subclass__(**kwargs) cls.registry[setting_name] = cls class SettingOne(RegistryHolder, setting_name='SettingOne'): pass class SettingTwo(RegistryHolder, setting_name='SettingTwo'): pass And the result is: print(RegistryHolder
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