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Does the behavior of guaranteed copy elision depend on existence of user-defined copy constructor?

c++ language-lawyer c++17 copy-elision gcc8 asked Feb 20, 2018 at 6:34

stackoverflow.com

15 votes

Can a C++ standard library header include a C standard header?

c++ c c++-standard-library asked Jun 2, 2016 at 10:26

stackoverflow.com

13 votes

How to prove there exist two elements in a positive integer sequence with bounded differences such that one is a multiple of the other?

sequences-and-series elementary-number-theory asked Nov 4, 2015 at 9:12

math.stackexchange.com

11 votes

If $x+y^3,x^2+y^2,x^3+y$ are all integers, are $x,y$ both integers?

number-theory elementary-number-theory polynomials algebraic-number-theory asked Apr 25, 2020 at 1:06

math.stackexchange.com

10 votes

Does stream::seekoff update the input sequence?

c++ stream buffer language-lawyer asked Jul 25, 2018 at 8:00

stackoverflow.com

10 votes

Is a specialization implicitly instantiated if it has already been implicitly instantiated?

c++ templates language-lawyer template-instantiation implicit-instantiation asked Sep 6, 2018 at 9:39

stackoverflow.com

10 votes

Does returning a temporary object create a temporary object in C++?

c++ return type-conversion temporary-objects asked Oct 30, 2015 at 10:04

stackoverflow.com

10 votes

Where should the definition of an explicit specialization of a class template be placed in C++?

c++ templates language-lawyer standards one-definition-rule asked Nov 29, 2017 at 2:56

stackoverflow.com

9 votes

Can reserved function names be overloaded?

c++ language-lawyer c++-standard-library reserved-words asked Jun 19, 2018 at 9:54

stackoverflow.com

9 votes

Template Argument Deduction Failure and Function Parameters/Arguments Mismatch

c++ templates language-lawyer template-deduction argument-deduction asked Oct 27, 2018 at 18:12

stackoverflow.com

Top Answers

151

How can you iterate over the elements of an std::tuple?

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Recover a set with the information of the sums of all its subsets

cs.stackexchange.com

Why does returning a std::optional sometimes move and sometimes copy?

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Do we still need to write the empty angle brackets when using transparent std function objects?

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Why do std::optional constructors use std::in_place?

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std::make_shared() change in C++17

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Slicing a vector in C++

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Why does std::span lack the comparison operators?

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Why is a reference parameter in a constexpr function not a constant expression?

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constexpr static data member without initializer

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May I treat a 2D array as a contiguous 1D array?

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Is {a^n (a+b)^n | n>0} a Deterministic CFL?

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g++ and clang++ different behaviour deducing variadic template `auto` values

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What algorithm should I use to find a minimal tree that include certain nodes within a graph?

cs.stackexchange.com

What is the usecase of return value for std::vector::emplace_back in C++17?

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Difference in the end of lifetime rules?

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Why does this template argument deduction/overload resolution fail?

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How does changing a template argument from a type to a non-type make SFINAE work?

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Does reinterpret_casting std::aligned_storage* to T* without std::launder violate strict-aliasing rules?

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Copy/move elision requires explicit definition of copy/move constructors

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Use of overloaded operator '[]' is ambiguous with template cast operator

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Perfect-forwarding a return value with auto&&

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Is a const reference bound to another reference which is cast from temporary a dangling reference?

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static_cast'd pointer value

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Worst-case input for median-of-medians with groups of size 3

cs.stackexchange.com

Under what conditions does the function C = f(A,B) satisfy H(C|A) = H(B)?

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Does there exist a positive integer $k$ such that $A = 2 ^ k + 3 ^ k$ is a square number?

math.stackexchange.com

Prove that "Finishing the degree in three years" problem is NP-Complete

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Why can't a 2D std::array be initialized with two layers of list-initializers?

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Finding the smallest string that contains a given set of substrings

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