[DGD] foreach

[Derek Hartley]

Well, at the risk of pointing out the obvious wouldn't
the foreach() you're requesting be written exactly the
same way you're doing it here? So you could simply
implement it yourself.

--- solicit <solicit at hot.ee> wrote:

> I am currently trying to port a mudlib from MudOS to
> DGD, and I've hit a major show-stopper - foreach.
> Just so you know, I've read the mailing list
> archives threads about it.
> 
> I can agree that sometimes it is better and clearer
> to use for() instead of foreach() when iterating
> over an array, but no so for a mapping. Consider
> this example:
> 
> With foreach:
> mapping m;
> m["a"] = "foo";
> m["b"] = "bar";
> foreach(key, value in m) {
>     printf("key: %s, value: %s\n", key, value);
> }
> 
> Without foreach:
> mapping m;
> string key, value; /* (if the mapping is
> declared/filled in somewhere else, then it can be
> hard to guess the type [although you could use
> mixed]) */
> string *keys;
> int i;
> 
> m["a"] = "foo";
> m["b"] = "bar";
> keys = keys(m);
> for(i = 0; i < sizeof(keys); i++) {
>     key = keys[i];
>     value = m[key];
>     printf("key: %s, value: %s\n", key, value);
> }
> 
> That's about twice as long (thrice if you don't
> count the filling-in-the-mapping part). Now consider
> me having to go through the 2300+ instances of
> foreach() in my mudlib (easily over half of them
> critical), and changing them all. Not something I'd
> like to do.
> 
> Now, if someone happens to have the old patch for
> DGD that adds foreach, then you can just ignore all
> this, but I thought I'd present my argument first.
> :)
> 
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