Tracking issue for collections reform part 2 (RFC 509)

[aturon]

RFC 509

[aturon]

cc @gankro

[Gankra]

TODO:

Easy

• Deprecate Vec::from_elem, Vec::from_fn, Vec::grow, Vec::grow_fn; in favour of iterator adaptors
• Deprecate the ListInsertion trait defined in DList in favour of an inherent method on its iterator
• Add reserve_len to VecMap
• Add resize to Vec - csouth3
• misc stabilization - At least partially done, need to look at it again

Moderate

• add append to:
  • DList
  • Vec
  • RingBuf
  • BTreeMap
  • BTreeSet
  • Bitv
  • BitvSet
  • VecMap
• add split_off:
  • DList
  • Vec
  • RingBuf
  • BTreeMap
  • BTreeSet
  • Bitv
  • BitvSet
  • VecMap
• Upgrade the Entry API - has PR
• Add truncate and resize to RingBuf (not specified, but makes sense to do) - has PR
• Add swap_pop to RingBuf (not specified, but makes sense to do) - has PR

[Gankra]

CC @huonw @alexcrichton @cgaebel @pczarn @csouth3 @gamazeps @gereeter @fcofdez

[aturon]

Note: I'm about to post a PR that does the deprecation for Vec methods.

[cgaebel]

cc @bfops I think you were working on upgrading the entry api?

[csouth3]

I can take care of resize for Vec.

[bfops]

Yeah I'm working on the entry API. Seems to be coming along!

[pczarn]

I'll start work on these methods for RingBuf:

Add truncate and resize to RingBuf (not specified, but makes sense to do)
Add swap_pop to RingBuf (not specified, but makes sense to do)

Did you mean swap_remove?

[Gankra]

Yes, sorry.

[gamazeps]

I'm starting the misc stabilization, should be over in a 2-3 days :)

[csouth3]

So, some of the misc stuff is done in #20053, but I didn't touch Bitv::{get,set}, didn't touch HashMap's and HashSet's iterators (either the documentation, or actually implementing DoubleEndedIterator and ExactSizeIterator for all of the appropriate iterators using the next_back implemented as next strategy noted in the RFC (if this is even what the RFC intends)), and I didn't attempt the tedium of moving std::vec to std::collections::vec, sooo....there's certainly plenty of misc left to do but wanted to give you heads up so your time doesn't end up getting wasted duplicating work :)

[gamazeps]

thx :)