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Erlang's 99.9999999% (nine nines) reliability

... The reliability figure wasn't supposed to measure the total time any part of AXD301 (project in question) was ever shut down for over 20 years. It represents the total time over those 20 years that the service provided by the AXD301 system was ever offline. S...
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What is the maximum amount of RAM an app can use?

... Are there any differences between the Android versions? Yes, insofar as OS requirements have increased over the years, and devices have to adjust to match. Are there differences concerning the manufacturer of the device? Yes, insofar as manufacturers manufacture devices, and the size varies...
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Should IBOutlets be strong or weak under ARC?

I am developing exclusively for iOS 5 using ARC. Should IBOutlet s to UIView s (and subclasses) be strong or weak ? 11...
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Disable browser's back button

How to disable browser's BACK Button (across browsers)? 20 Answers 20 ...
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How to detect Ctrl+V, Ctrl+C using JavaScript?

...his will do nothing about pastes from the context or edit menus, but I suppose the OP didn't ask directly about that. – Tim Down May 25 '10 at 13:34 ...
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What makes a keychain item unique (in iOS)?

My question concerns keychains in iOS (iPhone, iPad, ...). I think (but am not sure) that the implementation of keychains under Mac OS X raises the same question with the same answer. ...
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How to remove all callbacks from a Handler?

...as called by the main Activity . This Handler is used by sub-classes to postDelay some Runnables, and I can't manage them. Now, in the onStop event, I need to remove them before finishing the Activity (somehow I called finish() , but it still call again and again). Is there anyway to remove al...
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Line-breaking widget layout for Android

...out called FlexboxLayout from Google, which is highly configurable for purpose you want. FlexboxLayout is in Google GitHub repository at https://github.com/google/flexbox-layout at this moment. You can use it in your project by adding dependency to your build.gradle file: dependencies { compi...
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Scheduling recurring task in Android

...od completes. If your alarm receiver called Context.startService(), it is possible that the phone will sleep before the requested service is launched. To prevent this, your BroadcastReceiver and Service will need to implement a separate wake lock policy to ensure that the phone continues running unt...
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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 1 '12 at 12:25 ...