what is wrong with this code??

[steven kladitis via Digitalmars-d-learn]

On Saturday, 17 October 2015 at 14:59:41 UTC, anonymous wrote:
> On Saturday, October 17, 2015 04:50 PM, steven kladitis wrote:
>
>> core.exception.RangeError at sokuban.d(84): Range violation
>
> Line 84 being this:
> ----
> sDataBuild ~= sMap[ch];
> ----
>
> Where sMap is:
> ----
>         /*static*/ immutable sMap =
>             [' ':' ', '.':'.', '@':' ', '#':'#', '$':' '];
> ----
>
> Apparently, ch is some char that's not a key in sMap. Try 
> printing out ch to see what it is exactly. Then, assuming it's 
> really not a key in sMap, figure out if sMap should have that 
> key, or if ch should not end up with that value.

Yes!!! Now it makes sense!!!  Thanks....