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Java - No enclosing instance of type Foo is accessible

...on the fly :P } The last solution (a non-static nested class) would be mandatory if any instance of Thing depended on an instance of Hello to be meaningful. For example, if we had: public class Hello { public int enormous; public Hello(int n) { enormous = n; } public cl...
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What is the difference between a symbolic link and a hard link?

Recently I was asked this during a job interview. I was honest and said I knew how a symbolic link behaves and how to create one, but do not understand the use of a hard link and how it differs from a symbolic one. ...
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How can I make the tabs work normally on Xcode 4?

...hey don't work like tabs in other popular IDEs (Visual Studio or Eclipse). And for me this kind of sucks. In general, I expect IDE tabs to keep more than 1 file open. So if I click a file in the project tree, I expect that it will switch to the tab I have opened with that file - if I have already op...
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How to convert the ^M linebreak to 'normal' linebreak in a file opened in vim?

... Solution's response didn't work for me, only @MateenUlhaq commands helped me. – Edenshaw Jul 26 '18 at 17:05 add a comment  |  ...
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Notification when a file changes?

...oid CreateFileWatcher(string path) { // Create a new FileSystemWatcher and set its properties. FileSystemWatcher watcher = new FileSystemWatcher(); watcher.Path = path; /* Watch for changes in LastAccess and LastWrite times, and the renaming of files or directories. */ wa...
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How can I extract the folder path from file path in Python?

...the os.path.dirname function to do this, you just need to pass the string, and it'll do the work for you. Since, you seem to be on windows, consider using the abspath function too. An example: >>> import os >>> os.path.dirname(os.path.abspath(existGDBPath)) 'T:\\Data\\DBDesign' ...
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Can a C++ enum class have methods?

I have an enum class with two values, and I want to create a method which receives a value and returns the other one. I also want to maintain type safety(that's why I use enum class instead of enums). ...
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What is null in Java?

...ceof operator is true if the value of the RelationalExpression is not null and the reference could be cast to the ReferenceType without raising a ClassCastException. Otherwise the result is false. This means that for any type E and R, for any E o, where o == null, o instanceof R is always false. ...
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Creating a expressjs middleware that accepts parameters

...second definition of the function. What is happening there? I don't understand the following line return HasRole[role] || (HasRole[role] = function(req, res, next) { – Rafay Hassan Feb 12 '19 at 8:25 ...
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How do I turn off “Automatically Switch to Debug Perspective” mode in eclipse?

Is there a way to turn off this mode? I must have clicked it by accident, and now it's getting really annoying. 4 Answer...