Brendan Eich wrote:
On Feb 17, 2009, at 5:07 AM, Michael Haufe wrote:
David-Sarah Hopwood wrote:
"':' (not '=') is used to separate a property name from its value,
so it
can't also be used for type annotations."
Except in the case of JavaScript's non-standard Sharp Variables
(https://developer.mozilla.org/En/Sharp_variables_in_JavaScript),
Sharp variables (which I modeled after Common Lisp) are different
syntax -- their = sign comes *before* the object-type property value
or outermost object or array initialiser, and the = is preceded by the
sharp variable name. Also, you can't have any spaces between #n and =
(for non-negative integer n). There's really no comparison with the
syntax you sketched.
which is what sparked my question.Is there some ambiguity on why this
syntax reuse would be off the table?
Yes, there is an ambiguity. See the grammar:
PropertyNameAndValueList:
PropertyName ':' AssignmentExpression
PropertyNameAndValueList ',' PropertyName ':' AssignmentExpression
/be
Just the explanation I was looking for, thanks!
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