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Re: Question (difference between [Function] and [Method])
- To: email@example.com, firstname.lastname@example.org
- Subject: Re: Question (difference between [Function] and [Method])
- From: email@example.com (Andrew LM Shalit)
- Date: Thu, 12 Nov 1992 16:36:18 -0500
At 1:43 PM 11/12/92 +0000, Nobuhiko Funato wrote:
> Dylan book anonotates one of some categories for each function symbol
> description. E.g. [Function], [Method], [Generic Function], [G.F. Method]...
> I hope those categories will be introduced in p.16 (Manual Notation),
> or in p.19 (Language Overview),
> In fact, it is still not clear for me the distinction between [Function]
> and [Method]. My understanding is:
> [Generic Function] The specified generic function is bound to that symbol
> [G.F. Method] A generic function according to the specified method
> is bound to that symbol
> [Method] The specified method, so-called lambda closure of which
> parameters' types are specialized, is bound to that symbol
> (Method dispatch won't be occured, when the symbol is
> [Function] (How different from [Method] ? How is it defined ?)
> Please teach me the difference, though it may be an elementary question.
The classifications in the current manual are inconsistent. They're
scheduled to be cleaned up in the next version of the language design.
That said, here are the categories:
Generic Function The variable contains a generic function. The
attached description describes the protocol of
the generic function as a whole.
GF Method The variable contains a generic function. The
attached description describes the behavior of
a particular method in the generic function (i.e.,
the behavior of the generic function when called
with a particular set of arguments)
Method The variable contains a method. No generic function
Function It is unspecified whether the variable contains a
generic function or a method.
As I said, the current manual does not use these consistently.