User Vittorio Romeo - Stack Overflow

173 votes

4 answers

73k views

Is a `=default` move constructor equivalent to a member-wise move constructor?

asked Aug 17, 2013 at 15:41

125 votes

2 answers

7k views

Lambda capture and parameter with same name - who shadows the other? (clang vs gcc)

asked Feb 7, 2017 at 10:56

88 votes

6 answers

68k views

Is there a more efficient implementation for a bidirectional map?

asked Feb 13, 2014 at 16:48

80 votes

5 answers

27k views

Capturing perfectly-forwarded variable in lambda

asked Nov 9, 2014 at 18:00

75 votes

4 answers

7k views

Why is the construction of std::optional<int> more expensive than a std::pair<int, bool>?

asked Oct 3, 2017 at 11:55

57 votes

1 answer

3k views

Does a C++11 range-based for loop condition get evaluated every cycle?

asked Apr 2, 2013 at 13:56

48 votes

7 answers

68k views

Get size of terminal window (rows/columns)

asked Apr 29, 2014 at 15:52

44 votes

1 answer

5k views

Calling `this` member function from generic lambda - clang vs gcc

asked Aug 19, 2015 at 14:03

40 votes

2 answers

3k views

Overloading multiple function objects by reference

asked Mar 23, 2017 at 21:16

38 votes

6 answers

14k views

"Default member initializer needed within definition of enclosing class outside of member functions" - is my code ill-formed?

asked May 6, 2017 at 10:26

37 votes

3 answers

3k views

Why are non-placement `new` and `delete` built into the language and not just regular functions?

asked Jul 7, 2017 at 11:40

33 votes

3 answers

5k views

Using std::visit on a class inheriting from std::variant - libstdc++ vs libc++

asked Jul 12, 2018 at 15:28

33 votes

6 answers

4k views

Building asynchronous `future` callback chain from compile-time dependency graph (DAG)

asked Mar 3, 2016 at 17:24

32 votes

4 answers

1k views

Correctly propagating a `decltype(auto)` variable from a function

asked Aug 10, 2019 at 18:59

32 votes

7 answers

5k views

Library design: allow user to decide between "header-only" and dynamically linked?

asked Sep 1, 2014 at 13:15

31 votes

1 answer

5k views

What does it mean for `offsetof` to be "conditionally-supported" for non standard-layout classes in C++17?

asked Nov 27, 2017 at 19:37

31 votes

2 answers

1k views

Is using `std::get<I>` on a `std::tuple` guaranteed to be thread-safe for different values of `I`?

asked Nov 28, 2016 at 13:40

30 votes

7 answers

28k views

Check if local git repo is ahead/behind remote

asked Jul 18, 2013 at 9:39

29 votes

2 answers

1k views

Are there any realistic use cases for `decltype(auto)` variables?

asked Aug 9, 2019 at 23:40

28 votes

2 answers

2k views

Is it undefined behavior to `reinterpret_cast` a `T` to `T()[N]`?

asked Jan 25, 2018 at 13:28

25 votes

3 answers

2k views

Why does `std::make_shared` perform two separate allocations with `-fno-rtti`?

asked Mar 29, 2017 at 12:26

24 votes

3 answers

1k views

Using function argument as part of a constant expression - gcc vs clang

asked May 24, 2018 at 14:34

24 votes

1 answer

6k views

Understanding DEFER and OBSTRUCT macros

asked Apr 30, 2015 at 8:19

22 votes

6 answers

10k views

Efficient way of matching entities to systems in an entity component system

asked Aug 16, 2015 at 13:15

22 votes

4 answers

2k views

Preventing users from creating unnamed instances of a class [duplicate]

asked Nov 30, 2016 at 9:15

22 votes

2 answers

1k views

Most vexing parse with array access

asked Dec 12, 2017 at 15:19

22 votes

2 answers

17k views

Is static_cast<T>(...) compile-time or run-time?

asked Aug 26, 2013 at 23:29

21 votes

2 answers

4k views

Should I always move on `sink` constructor or setter arguments?

asked Sep 7, 2013 at 13:12

21 votes

3 answers

14k views

Faster alternatives to .Distinct()

asked May 11, 2011 at 21:43

21 votes

1 answer

682 views

Static vector internal data layout - `union` vs `std::aligned_storage_t` - huge performance difference

asked Feb 6, 2018 at 14:22

Collectives™ on Stack Overflow

318 Questions

Is a `=default` move constructor equivalent to a member-wise move constructor?

Lambda capture and parameter with same name - who shadows the other? (clang vs gcc)

Is there a more efficient implementation for a bidirectional map?

Capturing perfectly-forwarded variable in lambda

Why is the construction of std::optional<int> more expensive than a std::pair<int, bool>?

Does a C++11 range-based for loop condition get evaluated every cycle?

Get size of terminal window (rows/columns)

Calling `this` member function from generic lambda - clang vs gcc

Overloading multiple function objects by reference

"Default member initializer needed within definition of enclosing class outside of member functions" - is my code ill-formed?

Why are non-placement `new` and `delete` built into the language and not just regular functions?

Using std::visit on a class inheriting from std::variant - libstdc++ vs libc++

Building asynchronous `future` callback chain from compile-time dependency graph (DAG)

Correctly propagating a `decltype(auto)` variable from a function

Library design: allow user to decide between "header-only" and dynamically linked?

What does it mean for `offsetof` to be "conditionally-supported" for non standard-layout classes in C++17?

Is using `std::get<I>` on a `std::tuple` guaranteed to be thread-safe for different values of `I`?

Check if local git repo is ahead/behind remote

Are there any realistic use cases for `decltype(auto)` variables?

Is it undefined behavior to `reinterpret_cast` a `T` to `T()[N]`?

Why does `std::make_shared` perform two separate allocations with `-fno-rtti`?

Using function argument as part of a constant expression - gcc vs clang

Understanding DEFER and OBSTRUCT macros

Efficient way of matching entities to systems in an entity component system

Preventing users from creating unnamed instances of a class [duplicate]

Most vexing parse with array access

Is static_cast<T>(...) compile-time or run-time?

Should I always move on `sink` constructor or setter arguments?

Faster alternatives to .Distinct()

Static vector internal data layout - `union` vs `std::aligned_storage_t` - huge performance difference