Doing exercise from book, but I'm getting error with splitter

[sigod via Digitalmars-d-learn]

On Monday, 16 June 2014 at 16:49:46 UTC, Andrew Brown wrote:
>    ulong[string] dictionary; // the length property is ulong, 
> not
> uint

Actually length is size_t (uint on x86 and ulong on x64).