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Good examples of MVVM Template

...pproach, which is not quite classic MVVM, can be summarized as follows: A base class for a dialog ViewModel that exposes commands for commit and cancel actions, an event to lets the view know that a dialog is ready to be closed, and whatever else you will need in all of your dialogs. A generic vi...
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ES6 class variable alternatives

...eally have classes. Even with ES6 we're looking at an object- or prototype-based language rather than a class-based language. In any function X () {}, X.prototype.constructor points back to X. When the new operator is used on X, a new object is created inheriting X.prototype. Any undefined properti...
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Check for installed packages before running install.packages() [duplicate]

...1) system.file does not look in all .libPath() locations, and (2) my conda based R installation alters the .libPaths in some way. – Aditya Apr 11 '19 at 14:55 ...
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What is Node.js' Connect, Express and “middleware”?

...answer is really old (and now wrong). Here's the information (with source) based on the current version of Connect (3.0) / Express (4.0). What Node.js comes with http / https createServer which simply takes a callback(req,res) e.g. var server = http.createServer(function (request, response) { ...
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Rename a class in Xcode: Refactor… is grayed out (disabled). Why?

...ctor was disabled because the Xcode project I had opened was referencing a Base SDK that was missing. Edit Project Settings and in the Build tab set the Base SDK to one that you have (like for me this was iOS 4.2). This enabled Refactor for me. ...
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Guaranteed lifetime of temporary in C++?

...e pointer that strdup sees is invalid! Could you please explain a bit more based on this example? – Grim Fandango Dec 9 '14 at 13:00 ...
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How to check if type of a variable is string?

... In Python 2.x, you would do isinstance(s, basestring) basestring is the abstract superclass of str and unicode. It can be used to test whether an object is an instance of str or unicode. In Python 3.x, the correct test is isinstance(s, str) The bytes class is...
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Find which commit is currently checked out in Git

...n, you can do: $ git show --oneline -s c0235b7 Autorotate uploaded images based on EXIF orientation share | improve this answer | follow | ...
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Delete duplicate records in SQL Server?

...d EmployeeName table Employee . The goal is to delete repeated records, based on the EmployeeName field. 10 Answers ...
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mysqldump - Export structure only without autoincrement

I have a MySQL database and I am trying to find a way to export its structure only, without the auto increment values. mysqldump --no-data would almost do the job, but it keeps the auto_increment values. Is there any way to do it without using PHPMyAdmin (that I know it can do it)? ...