Hello Phil Dawes,
There is a Haskell package that has the function mapM_ (at http://hackage.haskell.org/package/base-4.6.0.1/docs/Data-Foldable.html#v:mapM-95- ). This function seems to be exactly what you want. I think that Rust should probably have a similar function (for now let's call it map_ although there's probably a more Rusty name). It'd have the signature fn map_(self, f: |T|). Personally, I'd like that function however other Rust developers may disagree (it's not a good idea to create a utility function for every case). If a map_ function is never created I'd personally like the for iter idiom. Alternatively, one could use the map_or function (although x.map_or((), |x| { ... is kind of ugly). _______________________________________________ Rust-dev mailing list Rust-dev@mozilla.org https://mail.mozilla.org/listinfo/rust-dev
