Historical reasons, mostly. FillChar() dates back to the Turbo Pascal days and was used for such purposes. The name is really a bit of a misnomer because while it says FillChar(), it is really FillByte(). The reason is that the last parameter can take a char or a byte. So FillChar(Foo, SizeOf(Foo), #0) and FillChar(Foo, … Read more
Existential types work in a more elaborate manner than regular types. GHC is (rightly) forbidding you from using theA as a function. But imagine there was no such prohibition. What type would that function have? It would have to be something like this: — Not a real type signature! theA :: ALL -> t — … Read more
I tend to see no issue with only requiring constraints on functions. The issue is, I suppose, that your data structure no longer models precisely what you intend it to. On the other hand, if you think of it as a data structure first and foremost, then that should matter less. I feel like I … Read more
Is there any way to configure the IOptions configuration system to deserialize the options using the record’s constructor instead of requiring a parameterless constructor? No, in general ASP.Net Core uses a lot of run-time type instancing, which requires constructor calls that are known beforehand, and in this case it requires a constructor with no arguments. … Read more
The JEP states this: Restrictions on records Records cannot extend any other class, and cannot declare instance fields other than the private final fields which correspond to components of the state description. Any other fields which are declared must be static. These restrictions ensure that the state description alone defines the representation. The Java 17 … Read more
Row and record can arguably be considered as the same thing. Fields and columns are different, a field is the intersection of a row and a column. i.e. if your table has 10 rows and 10 columns, it has 100 fields. When you create a table using DDL statements, you define columns (metadata). When you … Read more
The easiest way is to create your own descendant of TList. Here’s a quick sample console app to demonstrate: program Project1; {$APPTYPE CONSOLE} uses SysUtils, Classes; type PMyRec=^TMyRec; TMyRec=record Value: Integer; AByte: Byte; end; TMyRecList=class(TList) private function Get(Index: Integer): PMyRec; public destructor Destroy; override; function Add(Value: PMyRec): Integer; property Items[Index: Integer]: PMyRec read Get; default; … Read more
1718449215 is the decimal representation of the four character code for the kAudioFormatUnsupportedDataFormatError error. In general you can use something like this to get more information from the errors you receive: NSError *error = [NSError errorWithDomain:NSOSStatusErrorDomain code:my_error_code userInfo:nil]; NSLog(@”Error: %@”, [error description]);
I think that a simple way to do this would be using Soundflower and Soundflowerbed. I can’t see how to make the USB mics inputs to Soundflower and then pipe them into a Java. It sounds like you have Soundflower installed already. Soundflowerbed is found in the same disk image as Soundflower and is a … Read more