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How do you build a Singleton in Dart?

...-level variables are cool. However, anyone who can imported single.dart is free to construct a "new Impl()". You could give a underscore constructor to Impl, but then code inside the singleton library could call that constructor. – Seth Ladd Sep 29 '12 at 7:16 ...
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How to prevent SIGPIPEs (or handle them properly)

...t not want a global signal handler for SIGPIPE. On most BSD-based (MacOS, FreeBSD...) systems, (assuming you are using C/C++), you can do this with: int set = 1; setsockopt(sd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&set, sizeof(int)); With this in effect, instead of the SIGPIPE signal being gene...
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JavaScript module pattern with example [closed]

... would really recommend anyone entering this subject to read Addy Osmani's free book: "Learning JavaScript Design Patterns". http://addyosmani.com/resources/essentialjsdesignpatterns/book/ This book helped me out immensely when I was starting into writing more maintainable JavaScript and I still...
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Recommended SQL database design for tags or tagging [closed]

... you are using. The inconsistency argument is a little moot too. Tags are free text fields and there is no expected operation like 'rename all tags "foo" to "bar"'. So tldr: I would go for the two-table solution. (In fact I'm going to. I found this article to see if there are valid arguments again...
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How to show “Done” button on iPhone number pad

...ere are more than one and the add the functions hoopla and hoopla (feel free to choose other names, just change the selector names in ViewDidLoad accordingly func boopla () { textField.resignFirstResponder() } func hoopla () { textField.text="" textField.resignFirstResponder() } ...
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The breakpoint will not currently be hit. No symbols have been loaded for this document in a Silverl

..."i tried it on another system"!. Release Candidate does not mean it is bug free, and you will loose nothing if you try it. If you are using IE8, some people said it may be the root of the problem, check this: weblogs.asp.net/abdullaabdelhaq/archive/2009/06/01/… – Sameh Deabes...
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Can two applications listen to the same port?

... associated to the specific stream, leaving the original server descriptor free to get new connections from clients – Javier Dec 16 '10 at 12:00 7 ...
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How to add dividers and spaces between items in RecyclerView?

...le(ContextCompat.getDrawable(getContext(), R.drawable.divider)); You are free to use any custom drawable, for instance: <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <solid android:color="@color/colorPrimary"/> <size and...
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Upgrading PHP in XAMPP for Windows?

...e following link as it helped me, should work for you as well. http://hype-free.blogspot.com/2007/07/updating-php-in-xampp-for-windows.html Realizing that my answer helped couple of users, here is the edit from original link: Edit: First of all Always backup your data. Download the latest binary ve...
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Using a dispatch_once singleton model in Swift

...ating a singleton is thread safe, fast, lazy, and also bridged to ObjC for free. share | improve this answer | follow | ...