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What's the difference between equal?, eql?, ===, and ==?
I am trying to understand the difference between these four methods. I know by default that == calls the method equal? which returns true when both operands refer to exactly the same object.
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What can I use instead of the arrow operator, `->`?
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The following two expressions are equivalent:
a->b
(*a).b
(subject to operator overloading, as Konrad mentions, but that's unusual).
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What is std::move(), and when should it be used?
...ences and move constructors
In C++11, in addition to copy constructors, objects can have move constructors.
(And in addition to copy assignment operators, they have move assignment operators.)
The move constructor is used instead of the copy constructor, if the object has type "rvalue-reference" (...
What does default(object); do in C#?
Googling is only coming up with the keyword, but I stumbled across some code that says
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Difference between left join and right join in SQL Server [duplicate]
I know about joins in SQL Server.
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How to write a switch statement in Ruby
How do I write a switch statement in Ruby?
24 Answers
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How to stretch div height to fill parent div - CSS
I have a page with divs like below
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How to join strings in Elixir?
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If you just want to join some arbitrary list:
"StringA" <> " " <> "StringB"
or just use string interpolation:
"#{a} #{b}"
If your list size is arbitrary:
Enum.join(["StringA", "StringB"], " ")
... all of the solutions above will return...
From io.Reader to string in Go
I have an io.ReadCloser object (from an http.Response object).
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PHP: merge two arrays while keeping keys instead of reindexing?
... pairs) while keeping the string/int keys? None of them will ever overlap (because one has only strings and the other has only integers).
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