init

Using module's own objects in __main__.py

你离开我真会死。 提交于 2019-12-03 06:28:56
问题 I’m trying to access a module’s data from inside its __main__.py . The structure is as follows: mymod/ __init__.py __main__.py Now, if I expose a variable in __init__.py like this: __all__ = ['foo'] foo = {'bar': 'baz'} How can I access foo from __main__.py ? 回答1: You need to either have the package already in sys.path , add the directory containing mymod to sys.path in __main__.py , or use the -m switch. To add mymod to the path would look something like this (in __main__.py ): import sys

What's the differences between member initializer list and default member initializer on non-static data member?

我是研究僧i 提交于 2019-12-03 05:48:26
I'd like to understand what's the differences of using one form rather than the other (if any). Code 1 (init directly on variables): #include <iostream> using namespace std; class Test { public: Test() { cout<< count; } ~Test(); private: int count=10; }; int main() { Test* test = new Test(); } Code 2 (init with initialization list on constructor): #include <iostream> using namespace std; class Test { public: Test() : count(10) { cout<< count; } ~Test(); private: int count; }; int main() { Test* test = new Test(); } Is there any difference in the semantics, or it is just syntactic? wally Member

Python logging: Why is __init__ called twice?

六眼飞鱼酱① 提交于 2019-12-03 05:46:41
I am trying to use python logging with a config file and an own handler. This works to some degree. What really puzzle me is __init__ being called twice and __del__ being called once. When I remove the whole config file stuff and create the handler directly within the code __init__ is called once and __del__ is never called. My questions: Why is __init__ called twice? Why is __del__ called less often than __init__ ? The code: #!/bin/env python import logging import logging.handlers import logging.config class Test1TimedRotatingFileHandler(logging.handlers.TimedRotatingFileHandler): def __init_

Switch user in a init script?

非 Y 不嫁゛ 提交于 2019-12-03 03:58:22
Here's my Init script which I have at my Ubuntu workstation. I need to run a command as another user than root, but I just can't get my head around how it should be done. Neither sudo -u or su newuser seems to work. The script: respawn console none start on runlevel [2345] stop on runlevel [06] script su "anotherUser" -c ./myCommand end script I use this: su -l $MUSER -c "myCommand args..." Update : Since there is interest in this answer, I explain the way I use it here. We run servers as normal linux users, not root. The username contains three parts: service, customer, stage This way we can

Objective C - sample Singleton implementation

匿名 (未验证) 提交于 2019-12-03 02:16:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: * I definitely need a break... cause was simple - array was not allocated... Thanks for help. Because of that embarrassing mistake, I flagged my post in order to delete it. I do not find it useful for Users ;) * I have just tried to create a singleton class in iOS, but I probably I am making a mistake. Code (no ARC is a requirement): #import "PeopleDatabase.h" #import "Person.h" #import <Foundation/Foundation.h> @interface PeopleDatabase : NSObject { objetive NSMutableArray * _arrayOfPeople ; } +( PeopleDatabase *) getInstance ;

Slick.js: Get current and total slides (ie. 3/5)

匿名 (未验证) 提交于 2019-12-03 01:55:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: Using Slick.js - how does one get current and total slides (ie. 3/5) as a simpler alternative to the dots? I've been told I can use the customPaging callback using the callback argument objects, but what does that mean exactly? $('.slideshow').slick({ slide: 'img', autoplay: true, dots: true, customPaging: function (slider, i) { return slider.slickCurrentSlide + '/' + (i + 1); } }); http://jsfiddle.net/frank_o/cpdqhdwy/1/ 回答1: The slider object contains a variable that is containing the slide count. $('.slideshow').slick({ slide: 'img',

Run npm init from the c# console app

匿名 (未验证) 提交于 2019-12-03 01:23:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I have try to run "npm init" command from the c# console app, using this code: private void Execute(string command, string arg) { Process p = new Process(); p.StartInfo.FileName = command; p.StartInfo.Arguments = arg; p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardOutput = true; p.StartInfo.RedirectStandardInput = true; p.StartInfo.WorkingDirectory = @"E:\Work\"; p.Start(); p.WaitForExit(); } Execute(@"C:\Program Files\nodejs\npm.cmd", "init"); But nothing happening. I getting only 2 empty lines after the running my app.

Spring Bean的生命周期

匿名 (未验证) 提交于 2019-12-03 00:27:02
第 一种方式:指定初始化和销毁方法,通过@Bean 指定init-method和destory-method public class Car { public Car(){ System. out .println( " 调用 Car 类的构造方法。。。。 " ); } public void init(){ System. out .println( " 调用 Car init 方法。。。。。 " ); } public void destory(){ System. out .println( " 调用 Car 类的销毁方法。。。。。 " ); } } @Configuration public class @Bean (initMethod = "init" ,destroyMethod = "destory" public return new } } @Test public void AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfigOfLifeCycle. class System. out .println( " 容器创建完成 " Object bean = applicationContext

Windows通过schtasks设置开机自启动脚本

匿名 (未验证) 提交于 2019-12-03 00:26:01
首先创建一个启动脚本 init.bat,内容如下: time /t >> c:\test\test. log echo %COMPUTERNAME % >> c:\test\test. log echo %USERNAME % >> c:\test\test. log schtasks.exe / create /tn "init" /ru SYSTEM /sc ONSTART /tr "C:\test\init.bat" schtasks / delete /tn init schtasks / query /fo TABLE schtasks / query /fo TABLE /tn init schtasks / query /fo LIST schtasks / query /fo LIST /tn init schtasks / run /tn init 文章来源: Windows通过schtasks设置开机自启动脚本

Android 属性property_get/property_set

匿名 (未验证) 提交于 2019-12-02 23:56:01
每个属性都有一个名称和值,他们都是字符串格式。属性被大量使用在Android系统中,用来记录系统设置或进程之间的信息交换。属性是在整个系统中全局可见的。每个进程可以get/set属性。 在系统初始化时,Android将分配一个共享内存区来存储的属性。这些是由“init”守护进程完成的,其源代码位于:device/system/init。“init”守护进程将启动一个属性服务。 属性服务在“init”守护进程中运行。每一个客户端想要设置属性时,必须连接属性服务,再向其发送信息。属性服务将会在共享内存区中修改和创建属性。任何客户端想获得属性信息,可以从共享内存直接读取。这提高了读取性能。客户端应用程序可以调用libcutils中的API函数以GET/SET属性信息。libcutils的源代码位于:device/libs/cutils。API函数是: int property_get(const char *key, char *value, const char *default_value); int property_set(const char *key, const char *value); 而libcutils又调用libc中的 __system_property_xxx 函数获得共享内存中的属性。libc的源代码位于:device/system/bionic。