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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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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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How to make an Android Spinner with initial text “Select One”?

... overrides the Spinner view. It overrides setAdapter() to set the initial position to -1, and proxies the supplied SpinnerAdapter to display the prompt string for position less than 0. This has been tested on Android 1.5 through 4.2, but buyer beware! Because this solution relies on reflection to c...
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Difference between std::system_clock and std::steady_clock?

...n the standard where that is the case? It seems to clearly indicate the opposite. – Billy ONeal Sep 9 '15 at 18:56 9 ...
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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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How can I convert my Java program to an .exe file? [closed]

...ages your JAR, assets and a JVM for distribution on Windows, Linux and Mac OS X, adding a native executable file to make it appear like a native app. Packr is most suitable for GUI applications. – packr README packr is another open source tool. JSmooth JSmooth is a Java Executable Wrapper. It cr...
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How can I color Python logging output?

... @Swaroop - Those are ANSI escape codes, which you can read look up on Google, or find here: en.wikipedia.org/wiki/ANSI_escape_code, or alternatively pueblo.sourceforge.net/doc/manual/ansi_color_codes.html – Brian M. ...
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Is it better to call ToList() or ToArray() in LINQ queries?

...o meet other constraints you should use ToList. In the majority of scenarios ToArray will allocate more memory than ToList. Both use arrays for storage, but ToList has a more flexible constraint. It needs the array to be at least as large as the number of elements in the collection. If the arr...
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Using build types in Gradle to run same app that uses ContentProvider on one device

... None of existing answers satisfied me, however Liberty was close. So this is how am I doing it. First of all at the moment I am working with: Android Studio Beta 0.8.2 Gradle plugin 0.12.+ Gradle 1.12 My goal is to run Debug version along with Release version on the same device using...