nil, true, false in literal arrays
John Pfersich
johnp at key-biz.com
Thu Feb 19 23:08:40 UTC 2004
Lex Spoon wrote:
>"Richard A. O'Keefe" <ok at cs.otago.ac.nz> wrote:
>> Rather surprisingly,
>> #((1 2) (3 4))
>> is not even legal syntax in ANSI Smalltalk...
>
>
>Ack, I wonder why they did it that way? You can still do this of
>course, if I read it correctly:
>
> #( #(1 2) #(3 4))
>
>
>The only reason I can see for the ANSI spec is to allow this kind of
>usage:
>
> #( (1 + 2) (3 + 4)) "generates #(3 7) "
>
>But this is bogus IMHO. # should be for literals, just like the QUOTE
>that it mirrors from Lisp. Once you are in a quoted form, you should
>not have to keep quoting and quoting some more.
>
>-Lex
And it's especially wrong when you consider this from the blue book:
An array of two arrays and two numbers is described by the expression
#(('one' 1)('not' 'negative') 0 -1)
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