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Inheriting from a template class in c++

...a is not a template class, but a class template. That is, it is a template from which classes can be generated. Area<int> is such a class (it's not an object, but of course you can create an object from that class in the same ways you can create objects from any other class). Another such clas...
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Why do I get “'property cannot be assigned” when sending an SMTP email?

... mail.To and mail.From are readonly. Move them to the constructor. using System.Net.Mail; ... MailMessage mail = new MailMessage("you@yourcompany.com", "user@hotmail.com"); SmtpClient client = new SmtpClient(); client.Port = 25; client.Del...
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Can't subtract offset-naive and offset-aware datetimes

... have a timezone aware timestamptz field in PostgreSQL. When I pull data from the table, I then want to subtract the time right now so I can get it's age. ...
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How to decide when to use Node.js?

...ited for applications where you'd like to maintain a persistent connection from the browser back to the server. Using a technique known as "long-polling", you can write an application that sends updates to the user in real time. Doing long polling on many of the web's giants, like Ruby on Rails or D...
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Why doesn't Java offer operator overloading?

Coming from C++ to Java, the obvious unanswered question is why didn't Java include operator overloading? 16 Answers ...
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When should we use intern method of String on String literals

...ing to String#intern() , intern method is supposed to return the String from the String pool if the String is found in String pool, otherwise a new string object will be added in String pool and the reference of this String is returned. ...
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How to call asynchronous method from synchronous method in C#?

I have a public async void Foo() method that I want to call from synchronous method. So far all I have seen from MSDN documentation is calling async methods via async methods, but my whole program is not built with async methods. ...
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Graphviz: How to go from .dot to a graph?

...If graphiz isn't in your path, figure out where it is installed and run it from there. You can change the output format by varying the value after -T and choosing an appropriate filename extension after -o. If you're using windows, check out the installed tool called GVEdit, it makes the whole pro...
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Nested or Inner Class in PHP

...lared private and B can access them. In addition, B itself can be hidden from the outside world. Nested classes can lead to more readable and maintainable code. A nested class usually relates to it's parent class and together form a "package" In PHP You can have similar behavior in PHP ...
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Transferring files over SSH [closed]

...e attempting to "download" to local, because if you are executing the code from a remote instance, "local" will be interpreted as the "remote", if you see what I mean. So don't run ssh first. – PatrickT Apr 1 '14 at 4:09 ...