For reference, the FromIterator & Extendable traits are the things to
implement if one has a structure that can be constructed from/extended
with an iterator and wishes to share the behaviour.
http://static.rust-lang.org/doc/master/std/iter/trait.FromIterator.html
http://static.rust-lang.org/doc/master/std/iter/trait.Extendable.html
Thanks for pointing that out :)
Implementing FromIterator should work out fine. Extendable would need a
persistent version returning the newly created instance, something like:
mod persistent {
pub trait Extendable<A>: FromIterator
<http://static.rust-lang.org/doc/master/std/iter/trait.FromIterator.html><A>
{
fn extend
<http://static.rust-lang.org/doc/master/std/iter/trait.Extendable.html#tymethod.extend><T:
Iterator
<http://static.rust-lang.org/doc/master/std/iter/trait.Iterator.html><A>>(&self,
iterator: &mut T) -> Self;
}
}
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