I was wondering what people prefer as far as "fatal" errors in executing a custom command, such as in a library.
Should that be in a non-empty value returned by result()? Or should that cause some error message to the thrown? Or does it depend on the error?
OK, well, what about a library that exports lots of functions, such as a math library? Functions don't have a separate result for an error.
Should the error be a special value in the result and propagated through?
Or should an error function tell whether there was an error since the last call to error function?
Or should an error be thrown?
Dar
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