On Friday, 22 November 2013 at 07:37:11 UTC, Kenji Hara wrote:
2013/11/22 deadalnix <[email protected]>
On Friday, 22 November 2013 at 04:33:56 UTC, Kenji Hara wrote:
After removing 'function' concept, 'func' always means
function pointer or
delegate. So we cannot call functions without parenthesis
anymore. It is
unacceptable change to me, and many D programmers would
probably argue
same
thing.
It removes all ambiguities.
Optional parentheses are still an option when they aren't
ambiguous.
void foo() {}
foo; // Can still call foo if we want to.
It will introduce a new ambiguity. See below example.
int foo();
void test(int function() fp);
void test(int num);
void main() {
test(foo); // which test is called?
}
Kenji Hara
The first one.
Note that optional () is ambiguous by definition - the word
optional convey this very idea. The ambiguity introduced by
optional () must not be conflated by the one introduced by the
existence of non first class function.
You stated that the existence of function is necessary for
optional parentheses to exist, and I showed you that it is false.
Nothing more, nothing less.
