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Is it possible to make a type only movable and not copyable?
...reface: This answer was written before opt-in built-in traits—specifically the Copy aspects—were implemented. I've used block quotes to indicate the sections that only applied to the old scheme (the one that applied when the question was asked).
Old: To answer the basic question, you can a...
Performance surprise with “as” and nullable types
I'm just revising chapter 4 of C# in Depth which deals with nullable types, and I'm adding a section about using the "as" operator, which allows you to write:
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What's the point of map in Haskell, when there is fmap?
Everywhere I've tried using map , fmap has worked as well. Why did the creators of Haskell feel the need for a map function? Couldn't it just be what is currently known as fmap and fmap could be removed from the language?
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What is the difference between concurrency and parallelism?
What is the difference between concurrency and parallelism?
37 Answers
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What is the difference between named and positional parameters in Dart?
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Dart has two types of optional parameters: named and positional. Before I discuss the differences, let me first discuss the similarities.
Dart's optional parameters are optional in that the caller isn't required to specify a value for the...
Best way to get child nodes
I was wondering, JavaScript offers a variety of methods to get the first child element from any element, but which is the best? By best, I mean: most cross-browser compatible, fastest, most comprehensive and predictable when it comes to behaviour. A list of methods/properties I use as aliases:
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Is there a constraint that restricts my generic method to numeric types?
Can anyone tell me if there is a way with generics to limit a generic type argument T to only:
21 Answers
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How to un-submodule a Git submodule?
...oduling a Git submodule, bringing all the code back into the core repository?
12 Answers
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Why must we define both == and != in C#?
The C# compiler requires that whenever a custom type defines operator == , it must also define != (see here ).
13 Answe...
What are the minimum margins most printers can handle?
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Every printer is different but 0.25" (6.35 mm) is a safe bet.
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