[Issue 7840] New: $ property for arrays

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7840

           Summary: $ property for arrays
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: bearophile_hugs at eml.cc


--- Comment #0 from bearophile_hugs at eml.cc 2012-04-05 18:05:40 PDT ---
This is a low-priority and low-importance "enhancement suggestion" (it's not
even an enhancement request because I am not sure if this is a good idea. I
will close it if you think it's a bad idea).

Currently you are allowed to use $ to denote array lengths inside their [],
like this:
arr[$ - 1]

The idea here is to extend the $ syntax as suffix too, something like this:


@property size_t __dollar(T)(in T[] a) pure nothrow {
    return a.length;
}
void main() {
    int[5] a;
    auto len = a.$;
}


This shortens the code, and this code isn't harder to understand because D
programmers already know that $ means the length of the array.

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