Foreach func on any iterable struct

[gavr]

class SmplArrWrap<T>: ??? {
  public Iterable<T> itr;

  void print_arr(){
    foreach (var a in itr){
      print(@"$a\n");
    }
  }
}
//to_string' does not exist in the context of 'T'

I want to create a function that takes any Iterable and print it with foreach. For example Python or JS can write massive if u just put it in print() func, wanna the same for Vala.

But I ran into two problems. First of all, all the base types in Vala are just structs that are not inherited from a common ancestor, so I don’t know how to pass .to_string capability to T to output in template strings @"$T". I would also like to note that GLib.Object also does not contain to_string, although in C# it has ToString() which outputs the object type if the object is not of the base type.

Secondly, I didnt find the Iterable interface in Vala, it is in Gee, but I want it to work with normal arrays.

[chrisaw (Chris Williams)]

Vala depends on GLib for its runtime library and type system. There was an attempt to add an iterator API to GLib, but it didn’t happen: https://wiki.gnome.org/Attic/IteratorsAPI