Fear and loathing of the "perlification" of Smalltalk
stephane.ducasse at free.fr
Wed Sep 5 12:40:04 UTC 2007
Would be a nice evolution for smalltalk.
I always wanted to look at the way lisaac is doing infix and other
notation (but it should not be that powerful).
On 5 sept. 07, at 04:02, Andreas Raab wrote:
> Peter William Lount wrote:
>> I wonder Alan, if you could, expand on what you mean by "but it
>> needs to be done at the same level as regular programming (so it
>> can be used by any base version of the language)"?
> Isn't that obvious? When you add the method #frobler to Object you
> extend the language. And at the same level as regular programming.
> For example, one could consider implementing operators that way,
> say in a Prolog style, priority driven way:
> Object>>plus: anObject
> <operator: #+ type: #yfx priority: 500>
> Object>>minus: anObject
> <operator: #- type: #yfx priority: 500>
> This implements all the semantics as plain messages but leaves
> operators as syntactic sugar on top of them. The compiler would
> translate "a + b" into "a plus: b" and the decompiler -if it knows
> about the plus operator in your system- would decompile as #+. If
> it didn't know about it, it would decompile as #plus:. Your code
> would depend on the "PlusMinus" package that other people have to
> load (since it contains the operator definitions). Etc. It's pretty
> - Andreas
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