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Function in JavaScript that can be called only once

... executed only once, in each time after the first it won't be executed. I know from C++ and Java about static variables that can do the work but I would like to know if there is a more elegant way to do this? ...
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BACKUP LOG cannot be performed because there is no current database backup

...le] → OK This was wrong. I shouldn't have first created the database. Now, instead, I do this: Right click on Databases > Restore Database > General : Device: [the path of back up file] → OK share ...
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AES vs Blowfish for file encryption

...ufficient -- so they doubled that to 32 rounds. The best attack currently known is effective against only 11 rounds. If the original question hadn't specifically restricted the choices to AES and Blowfish, and simply asked for the most secure, reasonably well-known cipher, I'd probably have said Ser...
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C# naming convention for constants?

...on't even need to hover/Go To Definition to find out what it's about. You know it immediately. – Per Lundberg Feb 24 '17 at 22:10  |  show 1 m...
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What is an idempotent operation?

...e HTTP itself) of why PUT can be resent without worries while POST cannot. Now it appears that we are simply required to conform to the HTTP standards and the behaviour is totally based on how the server is implemented – mangusta Feb 22 at 6:11 ...
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Swift: declare an empty dictionary

...ict = [:] // ok, I'm done with it In the last example the dictionary is known to have a type Dictionary<String, String> by the first line. Note that you didn't have to specify it explicitly, but it has been inferred. ...
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What are the Dangers of Method Swizzling in Objective-C?

... calls that, but the _cmd argument isn't setFrame: like it should be. It's now my_setFrame:. The original implementation is being called with an argument it never expected it would receive. This is no good. There's a simple solution — use the alternative swizzling technique defined above. The arg...
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What does MissingManifestResourceException mean and how to fix it?

...bly in the project settings. (I changed it from (previously) "Servers" to (now) "RT.Servers".) In the auto-generated code in Resources.Designer.cs, there is the following code: internal static global::System.Resources.ResourceManager ResourceManager { get { if (object.ReferenceEquals(r...
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HTTP handler vs HTTP module

...eone explain in less than 2 sentences the difference between both? Yes, I know google can provide hundreds of answers but not one in 2 clear sentences:) ...
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Injecting Mockito mocks into a Spring bean

... Don't know why this answer is upvoted so much, the resulting bean cannot be autowired because it has the wrong type. – azerole Dec 7 '12 at 14:53 ...