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Node.js app can't run on port 80 even though there's no other process blocking the port

I'm running an instance of Debian on Amazon EC2 with Node.js installed. If I run the code below: 9 Answers ...
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How to create local notifications?

How can I setup local notifications so that at the time I set, my app generates a notification/alert with a customized message? ...
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How to make an app's background image repeat

I have set a background image in my app, but the background image is small and I want it to be repeated and fill in the whole screen. What should I do? ...
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Why does viewWillAppear not get called when an app comes back from the background?

... In other words, if someone looks at another application or takes a phone call, then switches back to your app which was earlier on backgrounded, your UIViewController which was already visible when you left your app 'doesn't care' so to speak -- as far as it is concerned, it's never disappeared and...
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Pass ruby script file to rails console

...pt itself. Consider doit.rb: #!/usr/bin/env ruby require "/path/to/rails_app/config/environment" # ... do your stuff This also works if the script or the current working directory are not within the rails app's directory. ...
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Objective-C ARC: strong vs retain and weak vs assign

... @Pascal: weak references aren't allowed in deployment targets where the os is not 5.0 or higher. So for older projects you can still use assign, but if you move to newer versions you have to switch to weak – Mattia Feb...
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node.js global variables?

... Globals are generally to be avoided, but if you really want to use them. The 3 statements below are all equivalent and will assign a var to the global scope: GLOBAL._ = require('underscore'); global._ = require('underscore'); _ = require('und...
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What is a good pattern for using a Global Mutex in C#?

...id ); // Need a place to store a return value in Mutex() constructor call bool createdNew; // edited by Jeremy Wiebe to add example of setting up security for multi-user usage // edited by 'Marc' to work also on localized systems (don't use just "Everyone") var allowEveryoneRu...
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How to correctly save instance state of Fragments in back stack?

... This is not related to question, onSaveInstance is not called when fragment is putted to backstack – Tadas Valaitis Jan 7 '15 at 10:14  |...
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redmine开源项目管理工具介绍 - 开源 & Github - 清泛网 - 专注IT技能提升

...管理项目开发。 4.新建问题 要创建新建的问题,你需要有新建问题的权限。Redmine默认有三种跟踪标签,即Bug、Feature、Support。 5.问题 问题是Redmine的核心业务。一个问题绑定到一个项目,由某用户创建,可以关联到某一版本...