TechQA.

Question

Why is there no crash when assigning a member widget as the central widget in QMainWindow?

score 54 · Answer 1 · 2024-03-03T00:19:51.097000

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54

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Why is there no crash when assigning a member widget as the central widget in QMainWindow?

54 views Asked by qloq At 03 March 2024 at 00:19

score 63 · Answer 2 · 2024-02-15T21:12:33.097000

Is there a way to modify a string external to a closure without having that closure take ownership of it?

63 views Asked by Chaseis4344 At 15 February 2024 at 21:12

score 58 · Answer 3 · 2024-02-14T19:40:10.570000

Why can I shadow a variable which has been borrowed before? Where is the owner?

58 views Asked by Rulus At 14 February 2024 at 19:40

score 109 · Answer 4 · 2024-01-04T08:16:56.910000

What is the relationship between ui and this in Qt?

109 views Asked by Bobby At 04 January 2024 at 08:16

score 121 · Answer 5 · 2023-12-22T14:52:10.673000

Conceptual ownership vs temporary shared access with `unique_ptr` / `shared_ptr`

121 views Asked by imre At 22 December 2023 at 14:52

score 96 · Answer 6 · 2023-09-22T12:49:23.477000

What pointer type to use, when I do not know the context the pointer are used

96 views Asked by steffen At 22 September 2023 at 12:49

score 96 · Answer 7 · 2023-03-27T09:02:49.883000

How do I model a non-owning view on some resource (not itself managed via shared_ptr), if not via raw pointer?

96 views Asked by Enlico At 27 March 2023 at 09:02

score 1011 · Answer 8 · 2023-03-13T08:36:04.800000

Why does this "cannot move out of `self.x` which is behind a mutable reference" error happen?

1k views Asked by eliaxelang007 At 13 March 2023 at 08:36

score 46 · Answer 9 · 2023-02-17T19:36:10.643000

vector of string slices goes out of scope but original string remains, why is checker saying there is an error?

46 views Asked by Brian Yeh At 17 February 2023 at 19:36

score 217 · Answer 10 · 2022-11-10T23:44:06.880000

Handling the validity of the object of a class stored in a different class

217 views Asked by xyf At 10 November 2022 at 23:44

score 164 · Answer 11 · 2022-10-17T13:37:08.960000

Pass ownership of an object into method of the same object?

164 views Asked by HelpingHand At 17 October 2022 at 13:37

score 64 · Answer 12 · 2022-10-09T22:57:35.387000

Conditionally passing ownership for members

64 views Asked by Bubaya At 09 October 2022 at 22:57

score 79 · Answer 13 · 2022-09-16T12:21:38.690000

Ownership not delegated to a function using unique_ptr < T > && and std::move ( )

79 views Asked by Lord Feistel At 16 September 2022 at 12:21

score 568 · Answer 14 · 2022-08-15T05:28:31.100000

Sharing arrays between threads in Rust

568 views Asked by pveentjer At 15 August 2022 at 05:28

score 162 · Answer 15 · 2022-07-07T21:28:22.307000

Moving objects can change the order destructors are called. Why isn't that a problem?

162 views Asked by Mark Wallace At 07 July 2022 at 21:28

score 770 · Answer 16 · 2022-04-10T07:23:58.137000

Confuse about borrowing in Rust

770 views Asked by Hello World At 10 April 2022 at 07:23

score 462 · Answer 17 · 2021-12-04T07:03:01.773000

Is there a way to delete a pointer that has not been assigned with new operator in the destructor? If so, should I delete it in the destructor?

462 views Asked by OneMoreGamble At 04 December 2021 at 07:03

score 1108 · Answer 18 · 2021-10-20T15:55:04.047000

Is using std::span into an std::vector after push_back is called undefined behavior

1.1k views Asked by user542101 At 20 October 2021 at 15:55

score 676 · Answer 19 · 2021-05-04T12:21:10.133000

How to keep one object alive as long as another object exists?

676 views Asked by nickname At 04 May 2021 at 12:21

score 104 · Answer 20 · 2021-05-04T10:51:06.717000

Ownership sharing with smart pointers while object initialization

104 views Asked by nickname At 04 May 2021 at 10:51

TechQA.

List Question

Why is there no crash when assigning a member widget as the central widget in QMainWindow?

Is there a way to modify a string external to a closure without having that closure take ownership of it?

Why can I shadow a variable which has been borrowed before? Where is the owner?

What is the relationship between ui and this in Qt?

Conceptual ownership vs temporary shared access with `unique_ptr` / `shared_ptr`

What pointer type to use, when I do not know the context the pointer are used

How do I model a non-owning view on some resource (not itself managed via shared_ptr), if not via raw pointer?

Why does this "cannot move out of `self.x` which is behind a mutable reference" error happen?

vector of string slices goes out of scope but original string remains, why is checker saying there is an error?

Handling the validity of the object of a class stored in a different class

Pass ownership of an object into method of the same object?

Conditionally passing ownership for members

Ownership not delegated to a function using unique_ptr < T > && and std::move ( )

Sharing arrays between threads in Rust

Moving objects can change the order destructors are called. Why isn't that a problem?

Confuse about borrowing in Rust

Is there a way to delete a pointer that has not been assigned with new operator in the destructor? If so, should I delete it in the destructor?

Is using std::span into an std::vector after push_back is called undefined behavior

How to keep one object alive as long as another object exists?

Ownership sharing with smart pointers while object initialization

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