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Default parameter for CancellationToken

I have some async code that I would like to add a CancellationToken to. However, there are many implementations where this is not needed so I would like to have a default parameter - perhaps CancellationToken.None . However, ...
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How to force LINQ Sum() to return 0 while source collection is empty

Basically when I do the following query, if no leads were matched the following query throws an exception. In that case I'd prefer to have the sum equalize 0 rather than an exception being thrown. Would this be possible in the query itself - I mean rather than storing the query and checking query.A...
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SQL Server: Examples of PIVOTing String data

...some simple SQL Server PIVOT examples. Most of the examples that I have found involve counting or summing up numbers. I just want to pivot some string data. For example, I have a query returning the following. ...
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C++11 emplace_back on vector?

... For anyone from the future, this behavior will be changed in C++20. In other words, even though implementation internally will still call T(arg0, arg1, ...) it will be considered as regular T{arg0, arg1, ...} that you would expect. ...
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How to use custom packages

I'm trying to create and use a custom package in Go. It's probably something very obvious but I cannot find much information about this. Basically, I have these two files in the same folder: ...
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How do I globally configure RSpec to keep the '--color' and '--format specdoc' options turned on

How do I set global configuration for RSpec in Ubuntu. 6 Answers 6 ...
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How can I keep my fork in sync without adding a separate remote?

Let's assume there is a repository someone/foobar on GitHub, which I forked to me/foobar . 6 Answers ...
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How to turn on line numbers in IDLE?

In the main shell of IDLE, errors always return a line number but the development environment doesn't even have line numbers. Is there anyway to turn on line numbers? ...
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Can Mockito capture arguments of a method called multiple times?

I have a method that gets called twice, and I want to capture the argument of the second method call. 6 Answers ...
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How do I install a module globally using npm?

I recently installed Node.js and npm module on OSX and have a problem with the settings I think: 7 Answers ...