assignment: left-to-right or right-to-left evaluation?

[Sergey Gromov]

Sat, 09 May 2009 11:43:09 -0500, Andrei Alexandrescu wrote:

> If we want to get rid of newID, we'd write:
> 
>        writeln(dic.length, '\t', word);
>        dic[word] = dic.length;
> 
> by the Python rule, and
> 
>        writeln(dic.length, '\t', word);
>        dic[word] = dic.length - 1;
> 
> by the C# rule.
> 
> What's best?

If you use the Python rule you can rewrite

    dic[word] = dic.length;

as

    dic.opIndexAssign(word, dic.length);

By the C# rule you cannot do without opIndexForAssignment sort of thing.
It's not a matter of best/worse IMO, it's a matter of feasible/not
feasible.