> | but in case Integer and Set(Integer) are the only things in scope, what
> | should
> |
> | a := {1}
> |
> | stand for?
>
> Well, I was talking about the interpreter where that is not an issue:
> domains are loaded automatically on demand (assuming they are
> exposed, which is the case for List and Integer).
> I expect the interpreter to take more central role than the compiler.
> The interpreter is what most OpenAxiom users `see'.
OK, I have no problem if there is a good way of making the syntax in the
interpreter close to mathematical syntax.
> To answer the above question for the compiler, the above is invokation
> of brace operator with an integer operand, therefore it should resolve
> to whatever is in scope -- otherwise error. It contains no syntactic
> element that indicates that the braces are used to group statements.
Sure there is no semicolon, but I don't understand. (Unfortunately, I
can only speak of Aldor...). Cannot
{1}
simply be considered as a collection of statements/expressions whose
length is one. It is simply put into braces and the braces have (in this
case) no meaning at all.
> |
> | Would the compiler complain because of ambiguities or what type would
> | 'a' have?
> |
> | If braces are allowed to enclose blocks of code (like in Aldor), I don't
> | think the set construction with braces is a good idea.
>
> Blocks of codes are separated by semicolons. Set elements are
> separated by comma. I'm not sure why you think this is a problem.
I am a mathematician and I have constructed a problematic case above.
> Could you elaborate with *typical* examples?
I agree that it might not be seen as *typical*.
> I must also confess that I'm not a big fan of losing braces for block
> of codes, when we have already many ways of writting blocks of codes
> -- and I'm not sure I've seen, in the context of Axiom, contexts where
> delimiting blocks of codes by braces is structurally superior to the
> layout rule. Yes, you have to count what you don't see, but that is
> not going to go away.
Hmmm, I still like the standard Aldor #nopile mode better than #pile
mode. Well, personal opinion.
Ralf
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