record Questions

3

Solved

If I have a positional record like this: public record Version(int Major, int Minor); it seems that I can only provide a <summary> documentation, like this: /// <summary> /// Version r...
Baluster asked 17/12, 2020 at 13:45

10

Solved

I use ffmpeg to record a window using this code: ffmpeg.exe -f dshow -y -i video="screen-capture-recorder":audio="virtual-audio-capturer":audio="Microphone (USB Audio Device)" -framerate 15 -v...
Complicity asked 20/8, 2014 at 4:33

1

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I'm having trouble understanding how to initialize a C# record using named parameters.. This obviously works with more traditional classes with get; set; (or init) properties. Am I missing some spe...
Archbishop asked 5/2, 2023 at 18:7

2

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I'm trying to use graphviz to do something similar to UML class diagrams. I wonder whether there is a way to make a node of style 'register' have its first field in a bold font, to make it differe...
Erwin asked 30/5, 2011 at 0:28

4

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I need to be able to have AVCaptureVideoDataOutput and AVCaptureMovieFileOutput working at the same time. The below code works, however, the video recording does not. The didFinishRecordingToOutput...
Decomposed asked 19/10, 2010 at 13:32

3

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Here I have a tricky situation, I guess. I need to be able to free an object which is a field of a record. I would normally write the cleanup code in the destructor, if it was a class. But since re...
Onida asked 12/10, 2012 at 14:31

2

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I was taught that structs should almost always be immutable, so this unusual behaviour of record classes vs. record structs threw me off guard. Using a record class... record class Person(string Fi...
Cypriot asked 18/7, 2022 at 18:22

2

Assume a JSON structure with multiple optional fields. With classes, you can do something like public static final class Foo { @JsonProperty("x") private int x = 1; @JsonProperty(&qu...
Keramic asked 27/5, 2022 at 11:17

3

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I have a procedure which receive as input parameter a record with 170 columns (it is based on the structure of a table). In the procedure I want to call a debugging procedure one of whose paramete...
Surf asked 1/2, 2018 at 10:15

1

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If I have a Java record with 2 properties and I want to define default values for the properties which should be used instead of null. I can either override the getters: public record MyRecord(Set&...
Scent asked 8/9, 2022 at 9:22

1

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The Optional<T> type introduced in Java 8 is mostly recommended to be used for return types and results. Hence, whenever I use it in a class field or a method parameter, I get a warning in In...
Stereobate asked 20/8, 2022 at 6:42

1

Creating immutable data structures, I really like the concept of Scala, where you can enforce object instantiation only via factory method in this way using case class (having a private canonical c...
Limacine asked 7/1, 2022 at 8:20

2

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The C# 9 records feature specification includes the following: A record type contains two copying members: A constructor taking a single argument of the record type. It is referred to as a "c...
Cammycamomile asked 21/9, 2020 at 14:35

3

I have just started playing around with C# 9 and .NET 5.0, specifically the new record construct. I find I have a lot of excellent use cases for the shorthand syntax of the record types. One of the...
Extravert asked 20/11, 2020 at 16:16

16

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I can't find anywhere it has been documented this. By default, the find() operation will get the records from beginning. How can I get the last N records in mongodb? Edit: also I want the returned...
Huoh asked 12/12, 2010 at 10:26

3

I've created a Java record, and would like to have a constructor that takes in a reduced number of arguments compared to the default constructor, and calculate and initialise all members based on t...
Haldan asked 28/2, 2022 at 14:14

2

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In simple words what is the difference between a final class and a record in Java 17? In which case should I use a record?
Kalevala asked 14/3, 2022 at 19:52

1

I am learning about monads in the book 'Learn You a Haskell for Great Good!' by Miran Lipovaca. I am reading about how the Control.Monad.Writer module exports the Writer w a type along with its Mon...
Trepang asked 12/3, 2022 at 10:13

2

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I am trying to access a nested record using lenses and prisms in Haskell: import Data.Text (Text) import Control.Lens.TH data State = State { _stDone :: Bool , _stStep :: StateStep } data Stat...
Cacophony asked 28/2, 2022 at 21:52

4

Solved

I can record normally, but after a WebRTC call, I get a crash: required condition is false: format.sampleRate == hwFormat.sampleRate Here is how I start the crash and installTap: func startRecord...
Steading asked 6/4, 2021 at 15:18

1

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I'm using @ConfigurationProperties annotation to auto-config my properties. Before my config class was working fine, but I tried to achieve the same thing with records and just fails. I was followi...
Performing asked 23/11, 2021 at 11:24

1

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Consider the following code: const testOne: Record<"foo"|"bar", string> = { "foo": "xyz" }; const testTwo: Record<string, string> = { "foo...
Justinjustina asked 23/7, 2021 at 6:24

3

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I am creating a radio application for iPhone (coded in Swift 4.2) and I want to add a function allowing me to record and save in a file, the sound produced by my radio (read from an AVPlayer) when ...
Tuyere asked 15/1, 2019 at 20:32

3

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I have a project using .NET Standard 2.1 and .NET core 3.1 - so the C# version is 8.0 According to a few articles I found (e.g. one, two), it should be possible to define a record type using this s...
Inhaul asked 25/5, 2021 at 11:32

1

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I did a long search and felt the need to ask here. The npm packages I used before did nothing. Has anyone done or experienced such an application before? All I want to do is record it as a video wh...
Steato asked 21/5, 2021 at 7:47

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