init

Instance variable in Stripes

由 有些话、适合烂在心里 提交于 2019-12-08 08:14:29
I'm trying to find a way to create an instance variable within the Stripes application context. Something that i would do in the init() method of a Servlet while using hand-coded servlets. The problem is that since an instance of the ActionBean is created each time the application is accessed, the variable in the actionBean is created multiple time. I have tried to get some reasonable place withing Stripes trying to call the ServletContext via ActionBeanContext.getServletContext() , but from there there is no way to access the init() method and write some code in it. Do you have any

Instance variable in Stripes

由 北战南征 提交于 2019-12-08 05:26:26
问题 I'm trying to find a way to create an instance variable within the Stripes application context. Something that i would do in the init() method of a Servlet while using hand-coded servlets. The problem is that since an instance of the ActionBean is created each time the application is accessed, the variable in the actionBean is created multiple time. I have tried to get some reasonable place withing Stripes trying to call the ServletContext via ActionBeanContext.getServletContext() , but from

Installing signal handler with Python

由 泄露秘密 提交于 2019-12-08 03:49:42
问题 (there is a follow up to this question here) I am working on trying to write a Python based Init system for Linux but I'm having an issue getting signals to my Python init script. From the 'man 2 kill' page: The only signals that can be sent to process ID 1, the init process, are those for which init has explicitly installed signal handlers. In my Python based Init, I have a test function and a signal handler setup to call that function: def SigTest(SIG, FRM): print "Caught SIGHUP!" signal

How to add an .sks files to existing Swift/Sprite-Kit project?

由 徘徊边缘 提交于 2019-12-08 01:57:35
问题 I started following Ray Wenderlich's 'Space Invaders' tutorial, but have diverged considerably. I now have 3 SKScenes - my title screen, my main game screen and my end level/game over screen. The title screen and the end game scene I added and these both have .sks files; the main game screen does not and all elements (SKSpriteNodes etc) are placed programatically. The flow of my program is as follows: I now would actually like to place some events of the main game screen via the scene editor,

Passing Linux boot opts to Init

由 筅森魡賤 提交于 2019-12-07 19:37:31
问题 I would like to pass some parameters to a customized Linux init via the boot options configured in the bootloader at boot. I've written test init's in both Python and C. The Python version is able to see anything in the kernel boot options that doesn't have a '=' or '.' in it. The values are found in sys.argv. However, the C program doesn't seem to get passed the values. I would have thought the sys.argv list in Python was generated by parsing the **argv array. Below are the test scripts and

浅析 Linux 初始化 init 系统，第 3 部分: Systemd

由 倖福魔咒の 提交于 2019-12-07 17:11:18
Systemd 的简介和特点 Systemd 是 Linux 系统中最新的初始化系统（init），它主要的设计目标是克服 sysvinit 固有的缺点，提高系统的启动速度。systemd 和 ubuntu 的 upstart 是竞争对手，预计会取代 UpStart，实际上在作者写作本文时，已经有消息称 Ubuntu 也将采用 systemd 作为其标准的系统初始化系统。 Systemd 的很多概念来源于苹果 Mac OS 操作系统上的 launchd，不过 launchd 专用于苹果系统，因此长期未能获得应有的广泛关注。Systemd 借鉴了很多 launchd 的思想，它的重要特性如下： 同 SysVinit 和 LSB init scripts 兼容 Systemd 是一个"新来的"，Linux 上的很多应用程序并没有来得及为它做相应的改变。和 UpStart 一样，systemd 引入了新的配置方式，对应用程序的开发也有一些新的要求。如果 systemd 想替代目前正在运行的初始化系统，就必须和现有程序兼容。任何一个 Linux 发行版都很难为了采用 systemd 而在短时间内将所有的服务代码都修改一遍。 Systemd 提供了和 Sysvinit 以及 LSB initscripts 兼容的特性。系统中已经存在的服务和进程无需修改。这降低了系统向 systemd

Installing signal handler with Python

由 a 夏天 提交于 2019-12-07 15:24:33
(there is a follow up to this question here ) I am working on trying to write a Python based Init system for Linux but I'm having an issue getting signals to my Python init script. From the 'man 2 kill' page: The only signals that can be sent to process ID 1, the init process, are those for which init has explicitly installed signal handlers. In my Python based Init, I have a test function and a signal handler setup to call that function: def SigTest(SIG, FRM): print "Caught SIGHUP!" signal.signal(signal.SIGHUP, SigTest) From another TTY (the init script executes sh on another tty) if I send a

Swift Cannot assign to self in a method

由 狂风中的少年 提交于 2019-12-07 13:13:35
问题 I've just faced a strange problem I have a class called Letter class Letter { init() {} } And I have an extension for this class: extension Letter { convenience init(file_path:String) { self = Letter.loadFromFile(file_path)} class func loadFromFile(file_path:String)->Letter {...} } I need to create and init with path to file and when i call Letter(file_path) I need a new object that returned by a func loadFromFile . How to assign in an init method or to return a new object? //Edit The same

Creating a pie chart in swift

由 99封情书 提交于 2019-12-07 11:42:01
问题 I'm trying to create a pie chart in swift, and would like to create the code from scratch rather than use a 3rd party extension. I like the idea of it being @IBDesignable, so I started with this: import Foundation import UIKit @IBDesignable class PieChart: UIView { var data: Dictionary<String,Int>? required init(coder aDecoder: NSCoder) { super.init(coder:aDecoder)! self.contentMode = .Redraw } override init(frame: CGRect) { super.init(frame: frame) self.backgroundColor = UIColor.clearColor()

init method in jersey jax-rs web service

由 微笑、不失礼 提交于 2019-12-07 08:38:46
问题 I'm new with jax-rs and have build a web service with jersey and glassfish. What I need is a method, which is called once the service is started. In this method I want to load a custom config file, set some properties, write a log, and so on ... I tried to use the constructor of the servlet but the constructor is called every time a GET or POST method is called. what options I have to realize that? Please tell, if some dependencies are needed, give me an idea how to add it to the pom.xml (or
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