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Unexpected behavior of std::is_copy_assignable and boost::optional

score 71 · Answer 1 · 2024-03-13T23:04:52.560000

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Unexpected behavior of std::is_copy_assignable and boost::optional

71 views Asked by joergbrech At 13 March 2024 at 23:04

score 89 · Answer 2 · 2024-03-12T11:07:59.940000

error: cannot convert 'std::optional<int>' to 'const int' in initialization

89 views Asked by Ludovic Aubert At 12 March 2024 at 11:07

score 66 · Answer 3 · 2024-01-27T10:57:20.780000

Writing functions which handle invalid inputs in C++

66 views Asked by Vedant Yadav At 27 January 2024 at 10:57

score 143 · Answer 4 · 2024-01-23T18:04:59.767000

Pass-through constructor for std::optional arguments

143 views Asked by kc9jud At 23 January 2024 at 18:04

score 145 · Answer 5 · 2024-01-23T07:32:13.467000

Pass-through constructor for std::optional argument

145 views Asked by kc9jud At 23 January 2024 at 07:32

score 141 · Answer 6 · 2024-01-15T22:48:51.953000

Stream insertion operator >> for std::optional

141 views Asked by kc9jud At 15 January 2024 at 22:48

score 108 · Answer 7 · 2023-12-15T05:38:52.980000

Is it possible to convert an object to std::optional without move or copy constructor?

108 views Asked by Jo3kerR At 15 December 2023 at 05:38

score 123 · Answer 8 · 2023-12-13T16:34:51.753000

Is there another way to achieve the functionality of std::optional without another object being created?

123 views Asked by Jo3kerR At 13 December 2023 at 16:34

score 224 · Answer 9 · 2023-11-23T19:05:52.123000

How std::optional library handles emplace operation?

224 views Asked by green blanket At 23 November 2023 at 19:05

score 158 · Answer 10 · 2023-11-09T10:38:24.467000

Getting an optional of a class derived from abstract class, from a class derived from abstract class

158 views Asked by bmetz At 09 November 2023 at 10:38

score 298 · Answer 11 · 2023-10-15T14:12:42.087000

Why does std::optional not use a sentinel value to represent an empty optional?

298 views Asked by NoSenseEtAl At 15 October 2023 at 14:12

score 56 · Answer 12 · 2023-10-09T04:05:36.127000

Value corrruption with a view pointing to a value within an std::optional

56 views Asked by jerin At 09 October 2023 at 04:05

score 58 · Answer 13 · 2023-10-01T15:09:01.340000

Copy constructor of optional using term "direct-non-list-initializes" instead of "copy constructs"

58 views Asked by cbhattac At 01 October 2023 at 15:09

score 61 · Answer 14 · 2023-09-25T09:49:48.763000

std::optional<T> assignment operators

61 views Asked by Vinod At 25 September 2023 at 09:49

score 148 · Answer 15 · 2023-08-24T14:36:56.637000

std::optional::transform with std::addressof

148 views Asked by R K At 24 August 2023 at 14:36

score 165 · Answer 16 · 2023-08-24T13:09:10.407000

Pass `std::optional::value` to `std::views::transform`

165 views Asked by Antonio At 24 August 2023 at 13:09

score 200 · Answer 17 · 2023-08-19T21:24:19.760000

Interaction between std::optional<std::any> and has_value()

200 views Asked by Daniel Tyebkhan At 19 August 2023 at 21:24

score 89 · Answer 18 · 2023-07-20T23:38:47.513000

What's the point of ref-qualified member functions in `std::optional::value`

89 views Asked by BIuesky At 20 July 2023 at 23:38

score 120 · Answer 19 · 2023-07-15T01:54:16.797000

How would a std::optional<std::nullopt_t> operate?

120 views Asked by Joshua Green At 15 July 2023 at 01:54

score 333 · Answer 20 · 2023-07-02T12:17:00.877000

Forward declaration of class inside unique_ptr inside optional with default argument fails

333 views Asked by Michael At 02 July 2023 at 12:17

TechQA.

List Question

Unexpected behavior of std::is_copy_assignable and boost::optional

error: cannot convert 'std::optional<int>' to 'const int' in initialization

Writing functions which handle invalid inputs in C++

Pass-through constructor for std::optional arguments

Pass-through constructor for std::optional argument

Stream insertion operator >> for std::optional

Is it possible to convert an object to std::optional without move or copy constructor?

Is there another way to achieve the functionality of std::optional without another object being created?

How std::optional library handles emplace operation?

Getting an optional of a class derived from abstract class, from a class derived from abstract class

Why does std::optional not use a sentinel value to represent an empty optional?

Value corrruption with a view pointing to a value within an std::optional

Copy constructor of optional using term "direct-non-list-initializes" instead of "copy constructs"

std::optional<T> assignment operators

std::optional::transform with std::addressof

Pass `std::optional::value` to `std::views::transform`

Interaction between std::optional<std::any> and has_value()

What's the point of ref-qualified member functions in `std::optional::value`

How would a std::optional<std::nullopt_t> operate?

Forward declaration of class inside unique_ptr inside optional with default argument fails

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