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What made i = i++ + 1; legal in C++17?

c++ language-lawyer c++1z asked Dec 7, 2017 at 19:16

stackoverflow.com

88 votes

What is the purpose of having an empty pair base class?

c++ libstdc++ asked Nov 20, 2020 at 14:32

stackoverflow.com

59 votes

Is stateful metaprogramming ill-formed (yet)?

c++ language-lawyer metaprogramming c++17 asked May 30, 2017 at 16:40

stackoverflow.com

28 votes

What is the rationale for requiring inclusion of <initializer_list>?

c++ header-files c++-standard-library stdinitializerlist asked Mar 19, 2018 at 17:29

stackoverflow.com

21 votes

Why is sfinae on if constexpr not allowed?

c++ c++1z asked Jun 6, 2017 at 16:21

stackoverflow.com

20 votes

What optimizations does __builtin_unreachable facilitate?

c++ gcc optimization asked Feb 19, 2019 at 10:53

stackoverflow.com

19 votes

Existence of objects created in C functions

c++ c language-lawyer object-lifetime asked Oct 24, 2017 at 11:15

stackoverflow.com

18 votes

Access control in template parameters

c++ language-lawyer asked Feb 27, 2019 at 15:56

stackoverflow.com

16 votes

Is there a slowest divergent function?

calculus real-analysis recursion asked Mar 19, 2015 at 8:04

math.stackexchange.com

15 votes

What is a temporary object with static storage duration

c++ language-lawyer asked Dec 22, 2017 at 17:34

stackoverflow.com

Top Answers

111

What is the purpose of having an empty pair base class?

stackoverflow.com

Can I write this if statement with a variable declaration on one line?

stackoverflow.com

Plank overhanging off a building — where does the normal force go?

physics.stackexchange.com

Locking multiple mutexes

stackoverflow.com

effective way to select last parameter of variadic template

stackoverflow.com

Passing capturing lambda as function pointer

stackoverflow.com

Exception safety and make_unique

stackoverflow.com

Let's hold language in comments to the same standard as posts

meta.stackexchange.com

Is it possible to reset reference to another value in C++?

stackoverflow.com

Placement new and assignment of class with const member

stackoverflow.com

Compiler stops optimizing unused string away when adding characters

stackoverflow.com

Reference referring to multiple objects, how is it possible?

stackoverflow.com

Official FAQ on gender pronouns and Code of Conduct changes

meta.stackexchange.com

Why does the implementation of declval in libstdc++-v3 look so complicated?

stackoverflow.com

How to prevent function parameter conversion from value to reference type in C++17?

stackoverflow.com

Zero-cost properties with data member syntax

stackoverflow.com

push_back vs emplace_back to a std::vector<std::string>

stackoverflow.com

Perfect forwarding of a callable

stackoverflow.com

Unions, aliasing and type-punning in practice: what works and what does not?

stackoverflow.com

Is the compiler allowed to optimise out private data members?

stackoverflow.com

Default construction of deleted constructor with braced initializer list

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How can unique_ptr have no overhead if it needs to store the deleter?

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How can I create a n way Cartesian product of type lists in C++?

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Is it legal to reuse memory from a fundamental type array for a different (yet still fundamental) type array

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Is it possible to use the `auto` keyword as a return type in a function pointer declaration with initialization?

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Can user defined numeric literals be immediately followed by a dot?

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Why doesn't a reference to an array work until we use a pointer?

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why c++ use memset(addr,0,sizeof(T)) to construct a object? Standard or compiler bug?

stackoverflow.com

Easy way to cout any struct in c++

stackoverflow.com

A variadic function that accepts Strings and Ints, Format the latter and concatenate all?

stackoverflow.com