Re: [Gestalt-users] Memo functions

[Colin P. A. <co...@co...>]

>>>>> "Florent" =3D=3D Florent Georges <dar...@ya...> writes:

    Florent> Colin Paul Adams wrote: Hi

    >> I have changed the non-compliant gexslt:memo-function extension
    >> attribute to do nothing but issue a warning message.

    >> Instead I have introduced the extension instruction
    >> gexslt:function.

    Florent>   If I remember correctly the discussion we had on XSL
    Florent> List, the attribute is not conmpliant because an
    Florent> extension attribute cannot change the behaviour of an
    Florent> XSLT instruction in anyway.

Well that is almost correct.
An extension attribute may change the behaviour, but only to the extent
that the behaviour is implementation defined.

That is not the case with a memo function.

    >> This is identical to xsl:function except that it memoizes the
    >> result just like specifying gexslt:memo-function=3D"yes" used to
    >> do.

    Florent>   Instead of defining gexslt:function to have the exact
    Florent> meaning of xsl:function with memoizing in addition, why
    Florent> not defining it to have the exact form/meaning of
    Florent> xsl:function, but with additional attributes (at the
    Florent> moment just @memo-function or @memoize).

    Florent>   That would make it possible to add another extension
    Florent> attribute to gexslt:function, without interfering with
    Florent> its memoization behaviour:

    Florent>     <!-- Maybe additional non-standard attributes... -->
    Florent> <gexslt:function name=3D"..." memoize=3D"true"> ...
    Florent> </gexslt:function>

I can still do that in the future, without loss of compatibility
(memoize would default to true) if I wish to.






















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Colin Adams
Preston Lancashire