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Why are my basic Heroku apps taking two seconds to load?

I created two very simple Heroku apps to test out the service, but it's often taking several seconds to load the page when I first visit them: ...
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How can I create an Asynchronous function in Javascript?

... You cannot make a truly custom asynchronous function. You'll eventually have to leverage on a technology provided natively, such as: setInterval setTimeout requestAnimationFrame XMLHttpRequest WebSocket Worker Some HTML5 APIs such as the File API, Web Database API Technologies that support...
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How to configure Ruby on Rails with no database?

It would be convenient to use Ruby on Rails for a small website project that has no current need for a database. I know I could create an empty database in MySQL and go from there, but does anyone know a better way to run Rails without a database? ...
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Reading ePub format

...k like (a subset of XHTML 1.1 + CSS) one to define a "manifest" that lists all of the files that make up that content (OPF, which is an XML file) one to define how everything is packaged up (OEBPS: a zip file of everything in the manifest plus a few extra files) The specs look a bit daunting but a...
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Determine on iPhone if user has enabled push notifications

... Call enabledRemoteNotificationsTypes and check the mask. For example: UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes]; if (types == UIRemoteNotificationTypeNone) // b...
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How to install an APK file on an Android phone?

I have a simple "Hello Android" application on my computer ( Eclipse environment), and I have built an APK file. How do I transfer the APK file to my Android phone for testing? ...
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When is it acceptable to call GC.Collect?

The general advise is that you should not call GC.Collect from your code, but what are the exceptions to this rule? 24 An...
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iOS 8 removed “minimal-ui” viewport property, are there other “soft fullscreen” solutions?

...ents of the main element). Disabling document scrolling prevents accidentally leaving the minimal-ui when scrolling upwards. As per the original iOS 7.1 spec, tapping the top bar brings back the rest of the chrome. The end result looks like this: For the sake of documentation, and in case...
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HTTP Basic Authentication - what's the expected web browser experience?

When a server allows access via Basic HTTP Authentication, what is the experience expected to be in a web browser ? 6 Answ...
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android asynctask sending callbacks to ui [duplicate]

...tivity I'm initializing the asynctask, and I want the asynctask to report callbacks back to my activity. Is it possible? Or does the asynctask must be in the same class file as the activity? ...