Re: stdx.data.json - enhancement suggestions

[Laeeth Isharc via Digitalmars-d-learn]

It doesn't like it.  Any thoughts ?

lexer.d(257): Error: safe function 
'stdx.data.json.parser.JSONLexerRange!(MapResult!(__lambda3, 
Result), cast(LexOptions)0, __lambda31).JSONLexerRange.empty' 
cannot call system function 
'app.lookupTickers.MapResult!(__lambda3, Result).MapResult.empty'

string[2][] lookupTickers(string dataSource,string[] searchItems)
{
        import stdx.data.json;
        import std.conv:to;
        import std.algorithm:canFind,countUntil,joiner,map;
        import std.string:toLower;
        bool found=false;
        bool checkedCode=false;
        bool checkedName=false;
        string[2][] ret;
        string buf;
        auto filename="../importquandl/"~dataSource~".json";
        //auto data=cast(string)std.file.read(filename);
        auto data = File("fileName")
                .byChunk(100*1024 * 1024) //1 MB. Data cluster equals 1024 * 4
                // .map!(ch => ch.idup)
                .joiner
                .map!(b => cast(char)b);
        auto range1=parseJSONStream(data);
}