Iterating chars by Word

[Виталий Фадеев via Digitalmars-d-learn]

Is:
wchar[] chars;  // like a: "import 
core.sys.windows.windows;\nimport std.conv      : to;\n"

Goal:
foreach ( word; chars.byWord )
{
    // ...
}

Iterating chars by Word...
How to ? ( simple, fast, low memory, beauty, perfect )