Collections meeting 06/27

[szeiger]

Topics for the next meeting, feel free to add more:

• Should we provide buffering transformations on Iterator (as implemented in Add missing operations #96) or only on Iterable (as in the 2.12 collections)?
• Empty parameter list vs no parameter list? We should make a decision based on the direction Dotty will take. Also consider Java interop.
• Implicit builders Implicit builders on top of #110 #112 vs Unify strict and lazy building #114.
• Type inference issue for collect (see Add collect #117)
• Merge Vector (Add Vector #115)
• Merge Traversable and Iterable operations (Add missing operations of Traversable #119 and Add missing operations of Iterable #120)
• Runtime error with Dotty only in Flatten and interaction between flatMap and Options #48
• Non-laziness of #::

[szeiger]

Meeting summary:

• Use Unify strict and lazy building #114 and defer type-driven building to a later time. Investigate Dotty build problem (@szeiger)
• Merge Add Vector #115, add StrictOptimizedSeqOps (@julienrf)
• Non-laziness of right-associative operators: Don't have such operators until we can fix the underlying problem
• Only add methods like dropRight to Iterable, not Iterator (same as Scala 2.12 collections)
• Defer decision about empty parameter lists

[Ichoran]

That all sounds good.

[julienrf]

I’m closing this issue because we have created separated issues for each actionable thing.