Why optional parameters must appear at the end of the declaration

Posted by Incognito on Stack Overflow See other posts from Stack Overflow or by Incognito
Published on 2010-05-24T10:03:15Z Indexed on 2010/05/24 10:11 UTC
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c#

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java

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language-agnostic

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language-design

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optional-parameters

In all programming languages supporting optional parameters that I have seen there is a imitation that the optional parameters must appear at the end of the declaration. No required parameters may be included after an optional item. What is the reason for that ? I guess it can be compiler/interpreter requirement.

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