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Android Fragment lifecycle over orientation changes

...ne fragment = new FragmentOne(); fragmentTransaction.add(R.id.fragment_container, fragment); fragmentTransaction.commit(); } else { // do nothing - fragment is recreated automatically } Be warned though: problems will occur if you try and access Activity Views from inside the ...
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Android : difference between invisible and gone?

...Visibility=Gone then you have to initialize the component..like eg Button _mButton = new Button(this); _mButton = (Button)findViewByid(R.id.mButton); so it will take more time as compared to Visibility = invisible. share ...
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How to read environment variables in Scala

...t in Play2 and Akka) then you can use foo = "default value" foo = ${?VAR_NAME} syntax to override foo if an environment variable VAR_NAME exist. More details in https://github.com/typesafehub/config#optional-system-or-env-variable-overrides ...
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How to render a DateTime object in a Twig template

...e date totally different, like extending the \DateTime class, and adding a __toString() method to it that checks the locale and acts accordingly. Edit: As pointed out by @Nic in a comment, if you use the Intl extension of Twig, you will have a localizeddate filter available, which shows the date i...
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How to check if object has any properties in JavaScript?

...5 https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys share | improve this answer | follow | ...
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How do I delete multiple rows in Entity Framework (without foreach)

...gFlags.NonPublic | BindingFlags.Instance).Where(field => field.Name == "_internalQuery").Select(field => field.GetValue(query)).First(); var objectQuery = internalQuery.GetType().GetFields(BindingFlags.NonPublic | BindingFlags.Instance).Where(field => field.Name == "_objectQuery").Selec...
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Why do assignment statements return a value?

... to be careful and draw your line for "simple" low for readability: return _myBackingField ?? (_myBackingField = CalculateBackingField()); A lot less chaff than checking for null and assigning. – Tom Mayfield Sep 27 '10 at 22:02 ...
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NSUserDefaults - How to tell if a key exists

...alue is nil: if([[NSUserDefaults standardUserDefaults] objectForKey:@"YOUR_KEY"] != nil) { ... } share | improve this answer | follow | ...
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Uninstall / remove a Homebrew package including all its dependencies

...package names what you don't want to keep installed. brew leaves > brew_packages Then you can remove all installed, but unwanted packages and any unnecessary dependencies by running the following command brew_clean brew_packages brew_clean is available here: https://gist.github.com/cskeeter...
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Catch All Bugs with BugTrap! - 开源 & Github - 清泛网 - 专注IT技能提升

...) // Link to Unicode DLL static void SetupExceptionHandler() { BT_SetAppName(_T("Your application name")); BT_SetSupportEMail(_T("your@email.com")); BT_SetFlags(BTF_DETAILEDMODE | BTF_EDIETMAIL); BT_SetSupportServer(_T("localhost"), 9999); BT_SetSupportURL(_T("http://ww...