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

... The error code EACCES means you don't have proper permissions to run applications on that port. On Linux systems, any port below 1024 requires root access. share | improve this answer ...
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How to execute a Python script from the Django shell?

... Another solution that appears to work for both Python 2.x and 3.x is echo 'import myscript' | python manage.py shell. I've found this can be useful for quick-and-dirty scripts that you only need to run once, without having to go through the cumber...
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In Flux architecture, how do you manage Store lifecycle?

I'm reading about Flux but the example Todo app is too simplistic for me to understand some key points. 3 Answers ...
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angular.service vs angular.factory

...ion); angular.factory('myFactory', myFactoryFunction); I had trouble wrapping my head around this concept until I put it to myself this way: Service: the function that you write will be new-ed: myInjectedService <---- new myServiceFunction() Factory: the function (constructor) that you w...
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Proper use of beginBackgroundTaskWithExpirationHandler

...rtant that you call endBackgroundTask when you're finished - otherwise the app will be killed after its allotted time has expired. Mine tend look something like this: - (void) doUpdate { dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ [self beginBackg...
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How to create a GUID/UUID using iOS

... your iPhone. EDIT: -[UIDevice uniqueIdentifier] is now deprecated and apps are being rejected from the App Store for using it. The method below is now the preferred approach. If you need to create several UUID, just use this method (with ARC): + (NSString *)GetUUID { CFUUIDRef theUUID = CF...
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How can I change Mac OS's default Java VM returned from /usr/libexec/java_home

..._HOME="`/usr/libexec/java_home -v '1.7*'`" But standard double-clickable application bundles don't use JDKs installed under /Library/Java at all. Old-style .app bundles using Apple's JavaApplicationStub will use Apple Java 6 from /System/Library/Frameworks, and new-style ones built with AppBundle...
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How to set versionName in APK filename using gradle?

...mple too. The examples below will create apk files named named MyCompany-MyAppName-1.4.8-debug.apk or MyCompany-MyAppName-1.4.8-release.apk depending on the build variant selected. Note that this solution works on both APK and App Bundles (.aab files). See Also: How to change the proguard mapping f...
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Activity启动器(ActivityStarter)如何查看并启动其他App · App Inventor 2 中文网

创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 var _hmt = _hmt || []; (function() ...
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