Standard library behavior change for LazyMapCollection prefix to act as a Sequence

The Swift standard library provides lazy variations of its Sequence and Collection types, on which operations such as map and filter are implemented lazily. This means that the actual computations will only occur when the results are needed. In this Swift evolution pitch, Greg Titus proposes an addition to the standard library that improves the behavior of the LazyMapCollection type.

Extend implicit member syntax to cover chains of member references

This Swift evolution proposal suggests an expansion of implicit member syntax to more complex expressions than just a single static member or function. What this means is that when the type of an expression is implied by the context, developers would be able to use leading dot syntax, even when the expression consists of chains of member references. This is a very logical language evolution in my opinion.