ResultLib
Small library containing a Result<TOk, TError> class to be returned from operations that can fail in non-exceptional ways.
Usage
You can chain together results such that any errors along the way will short-circuit the chain, allowing you to handle the errors only once per chain.
Example from src/ResultDemo/Services/OtherService.cs:
public Result<string, IOtherServiceError> GetResult(bool success1, bool success2, string sampleName)
{
return this.otherOperation.Invoke(success1)
.ConvertErrorType<OtherError, IOtherServiceError>()
.ContinueWith((ok) =>
{
return this.interestingOperation.Invoke(success2)
.ConvertErrorType<InterestingError, IOtherServiceError>()
.ContinueWith((ok) =>
{
return this.sampleService.GetResult(sampleName).GetValue() switch
{
int i => Result<string, IOtherServiceError>.FromOk("ok"),
AddNegativeError => Result<string, IOtherServiceError>.FromError(new GenericError("Cannot add negative numbers")),
NotFoundError => Result<string, IOtherServiceError>.FromError(new GenericError("Sample not found")),
_ => throw new NotImplementedException(nameof(ISampleServiceError)),
};
});
});
}Take a peek through src/ResultDemo and test/ResultDemo.Tests for more examples of how it can be used.
