d这样赋值关联数组

    string[string]t;
    File a="ab.txt";//keyi
    //string b=a.readln();
    //string[]d;
    t["kb"]="aa";
    foreach(b;a.byLine()){//
        //writeln(b);
        auto c=b.split(',');
        t[c[0].idup]=c[0].idup;//
        writeln(t.length);
    }

注意,idup,不然.转换不了.