IError Interface

Ferrum.IError is the interface of a basic error value, typically used in result types of the form Result<TValue, TError>.

F# supports the Result type in its standard library, and C# has various community libraries such as DotNext (Their use is optional, but wrappers improve usability).

IError contains a string error message IError.Message (expected to be a single line, without trailing punctuation) and can provide low-level error via the IError.InnerError property. To display errors as string, see Error Formatting.