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Error handling strategies
Some kind of language support for error handling (e.g exceptions of various kinds, on error blocks, Maybe types, continuations etc.) has become standard. The exact mechanism is yet another language design decision designers have to make.
Eric Lippert describes VBScript's error handling mechanims. The VBScript approach is perhaps more confusing than it has to be (though I personally didn't find Eric's examples confusing). Tying exception handlers to blocks is more structured and perhaps better. Be that as it may, I think better error handling constructs are still waiting to be discovered (or designed). |
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