Why exceptions for error handling is so important

[via Digitalmars-d]

On Monday, 12 January 2015 at 09:41:08 UTC, bearophile wrote:
> Walter Bright:
>
>> I do understand that the packed error code technique can be 
>> made to work, but the inconvenience seems to be high.
>
> Apparently if the language syntax is designed for that style of 
> functional programming, the "inconvenience" seems to be very 
> low.

Yes, dataflow.