[Zope3-dev] Re: reasonable syntax for multi-adaptation

[Marius Gedminas]

On Wed, Sep 26, 2007 at 09:09:37PM -0400, Tres Seaver wrote:
> Why does the caller care?  She just wants an object which will provide
> the 'IFoo' contract on behalf of the passed context.  If 'x' is capable
> of providing 'IFoo' without help, then failing (or worse, returning a
> less-specific factory result) when calling 'getAdapter' is the Wrong
> Thing (a "least surprise" violation, if nothing else).

FWIW it was a big surprise to me when I discovered that IFoo(x) has
different semantics from getAdapter(x, IFoo).

Marius Gedminas
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