Note also that this dies in a different place in 0.92 (last tagged
release before the "generic delegates support" feature):
$ valac --pkg gee-1.0 test.vala
test.vala:23.37-23.37: error: Argument 1: Cannot convert from `G' to `int'
a.map( (i) => { return "%d".printf(i); }, b);
^
Compilation failed: 1 error(s), 0 warning(s)
martin
On Tue, Aug 17, 2010 at 6:09 PM, Martin DeMello <[email protected]> wrote:
> What do I need to do to get the following code to compile? It dies with
>
> $ valac --pkg gee-1.0 test.vala
> **
> ERROR:valasemanticanalyzer.c:2948:vala_semantic_analyzer_get_actual_type:
> assertion failed: (instance_type != NULL)
> Aborted
>
>
> # -------------------------------------------------------
> using Gee;
>
> public interface Enumerable<G, T> : Iterable {
>
> public delegate T DFunc(G elem);
>
> public void map(DFunc fn, Gee.List<T> acc) {
> foreach (G i in this) {
> acc.add(fn(i));
> }
> }
> }
>
> public class EnumerableList<G, T> : Gee.ArrayList<G>, Enumerable<G, T> {
> }
>
> public static int main(string[] args) {
> var a = new EnumerableList<int, string> ();
> a.add(1);
> a.add(2);
> a.add(3);
> var b = new Gee.ArrayList<string> ();
> a.map( (i) => { return "%d".printf(i); }, b);
> foreach (string i in b) {
> println(i);
> }
>
> return 0;
> }
>
> #----------------------------------------------------
>
>
> martin
>
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