> Greetings,
>
> I just joined here, so sorry if this has been posted before.
>
> I'm reading TDPL and the example on page 8 doesn't compile. I'm using the
> latest GDC with GCC 4.4.5. I've checked the errata, but nothing for this
> error.
>
> import std.stdio;
> import std.string;
>
> void main(){
>
> size_t[char[]] dictionary;
> foreach(line; stdin.byLine()){
> foreach(word; splitter(strip(line))){
> if(word in dictionary) continue;
> auto newID = dictionary.length;
> dictionary[word] = newID;
> writeln(newID, '\t', word);
> }
> }
> //writeln(dictionary.length);
> }
>
>
> This is the error:
> dictionary.d:12: Error: associative arrays can only be assigned values with
> immutable keys, not char[]
>
> If i use immutable keys, it works, but it defeats the purpose. So what's
> wrong with the code?