Make dur a property?

[anonymous]

My two cents on properties (comments along the way):

alias int delegate() C;
C c;
auto noprop() {return c;}
void noprop(C v) {c = v;}
@property auto prop() {return c;}
@property void prop(C v) {c = v;}

static assert(
    is(typeof( noprop             ) == function) /* well ... I 
guess, technically */
&& is(typeof( prop               ) == C) /* ok */

&& is(typeof( {return noprop;}() ) == C) /* fails with -property. 
that's goofy */
&& is(typeof( {return prop;}()   ) == C) /* ok */

&& is(typeof( {noprop = c;}      )) /* fails with -property. 
that's alright */
&& is(typeof( {prop = c;}        )) /* ok */

&& is(typeof( &noprop            ) == C function()) /* of course 
*/
&& is(typeof( &prop              ) == C function() @property) /* 
bad, should be typeof(&c) */

&& is(typeof( noprop()           ) == C) /* of course */
&& is(typeof( prop()             ) == C) /* bad, should be int */

&& is(typeof( noprop()()         ) == int) /* of course */
&& is(typeof( prop()()           ) == int) /* bad, should error */
);