[Issue 14772] New: issuing errors for array ops -> tell users which function are missing

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14772

          Issue ID: 14772
           Summary: issuing errors for array ops -> tell users which
                    function are missing
           Product: D
           Version: D2
          Hardware: x86
                OS: Mac OS X
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: iamthewilsonator at hotmail.com

see http://forum.dlang.org/thread/qfdjeuajnxpqzwikbedo@forum.dlang.org

currently dmd says 
Error: invalid array operation 'expression' because type doesn't support
necessary arithmetic operations.

Enhance to tell user which operations (opSlice / opSliceAssign etc.) they need
to implement to get desired behaviour.

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