[Issue 11213] New: Simplify switch case-range statement

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=11213

           Summary: Simplify switch case-range statement
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: andrej.mitrovich at gmail.com


--- Comment #0 from Andrej Mitrovic <andrej.mitrovich at gmail.com> 2013-10-09 16:19:04 PDT ---
The current case-range syntax is rather awkward and verbose:

-----
import std.stdio;

void main()
{
    foreach (x; 0 .. 10)
    {
        switch (x)
        {
            case 0: .. case 4:
                writeln("a");
                break;

            case 5: .. case 9:
                writeln("b");
                break;

            default:
        }
    }
}
-----

I suggest we allow the syntax "case 0 .. 4:", e.g.:

-----
switch (x)
{
    case 0 .. 4:
        writeln("a");
        break;

    case 5 .. 9:
        writeln("b");
        break;

    default:
}
-----

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