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C# pattern to prevent an event handler hooked twice [duplicate]

...an't prevent multiple subscriptions, so, make them figure out the removal, etc... besides, why prevent someone from subscribing the same handler more than once if the want to?) – Code Jockey Jun 19 '14 at 15:31 ...
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StringFormat Localization issues in wpf

...e Run element does not inherit from FrameworkElement, so if you bind dates etc. to a Run then you will need an extra call for typeof(System.Windows.Documents.Run) – Mat Fergusson Jan 7 '15 at 13:49 ...
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java.net.ConnectException: Connection refused

...to work out exactly how far the data's getting. Look at your firewall logs etc. – Jon Skeet Sep 30 '12 at 17:53 @JonSk...
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Android emulator shows nothing except black screen and adb devices shows “device offline”

...em image on Intel systems based on Core microarchitecture (Core, Core2 Duo etc.). All systems based on Nehalem and beyond are supported. (Corei3, Core i5 and Core i7 machines). I spent a day trying to figure this problem out when I came upon this quote. The only thing that works is to use the non-...
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How do I capture the output of a script if it is being ran by the task scheduler?

...runs any command as a windows service and handles restarting after failure etc. – leemes Jun 23 '17 at 15:37 add a comment  |  ...
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Scala best way of turning a Collection into a Map-by-key?

...en here. Looking at the source code of scala.collection.mutable.MapBuilder etc, it seems to me that for each tuple, a new immutable map is created to which the tuple is added. – jcsahnwaldt Reinstate Monica Mar 3 '12 at 2:17 ...
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“Inspect” a hover element?

...lly stay as-is even when I mouseover to other places like Inspect Element, etc. You can just refresh the browser when doing inspecting the menu dropdown elements to go back to normal state. Hope this helps. :) share ...
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How do I tell if a regular file does not exist in Bash?

...e - Check for file existence, regardless of type (node, directory, socket, etc.) -f filename - Check for regular file existence not a directory -G filename - Check if file exists and is owned by effective group ID -G filename set-group-id - True if file exists and is set-group-id -k filename - Stick...
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Should all Python classes extend object?

... double-underscore methods, descriptors, super() method, property() method etc. Example 1. class MyClass: pass Example 2. class MyClass(): pass Example 3. class MyClass(object): pass share | ...
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How do I split a multi-line string into multiple lines?

...that, you will have issues with windows line ends on Linux and vice versa, etc. Moreover, it is promoting splitlines with True argument which is likely the less common way of using it... – lpapp Aug 27 '14 at 17:29 ...