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List vs tuple, when to use each? [duplicate]
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There's a strong culture of tuples being for heterogeneous collections, similar to what you'd use structs for in C, and lists being for homogeneous collections, similar to what you'd use arrays for. But I've never quite squared this with the mutability issue ...
Accessing Object Memory Address
When you call the object.__repr__() method in Python you get something like this back:
9 Answers
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How do I pass a unique_ptr argument to a constructor or a function?
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Here are the possible ways to take a unique pointer as an argument, as well as their associated meaning.
(A) By Value
Base(std::unique_ptr<Base> n)
: next(std::move(n)) {}
In order for the user to call this, they must do one of the...
Lambda Expression and generic method
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You can't use a lambda expression for a functional interface, if the method in the functional interface has type parameters. See section §15.27.3 in JLS8:
A lambda expression is compatible [..] with a target type T if T is a functional int...
git: switch branch without detaching head
I have a repository on github with a main branch (master) and a branch for some experimental work. I made some commits and pushed to the experimental branch and everything was fine.
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Visual Studio - Shortcut to Navigate to Solution Explorer
Is there a keyboard shortcut in Visual Studio (aside from CTRL + TAB and selection) that would take me from inside a document directly into the solution explorer? I don't want to customize any shortcuts or change any default behavior.
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get keys of json-object in JavaScript [duplicate]
I have a json-object in JavaScript and I want to get the used keys in it. My JavaScript-Code looks like this:
3 Answers
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When should std::move be used on a function return value? [duplicate]
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In the case of return std::move(foo); the move is superfluous because of 12.8/32:
When the criteria for elision of a copy operation are met or would be
met save for the fact that the source object is a function parameter,
and the object to be copied is designated by an lvalue, o...
Stack, Static, and Heap in C++
I've searched, but I've not understood very well these three concepts. When do I have to use dynamic allocation (in the heap) and what's its real advantage? What are the problems of static and stack? Could I write an entire application without allocating variables in the heap?
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Chained method calls indentation style in Python [duplicate]
... line continuation character is preferred to open parentheses.
ShortName.objects.distinct() \
.filter().values() # looks better
The need for this style becomes more obvious as method names get longer and as methods start taking arguments:
return some_collection.get_objects(locator=...