P2164 views::enumerate

[wg21bot]

P2164R0 views::enumerate (Corentin Jabot)

[wg21bot]

P2164R1 views::enumerate (Corentin Jabot)

[inbal2l]

A short summary of the feedback form ML, closed on 14 Sep 2020:

1. index's type should be replaced from difference_type to count_type .
   The bug was fixed on R2
2. enumerate's value_type should have range_value_t value, instead of range_reference_t value.
   The bug was fixed on R2
3. A suggestion to reconsider the return value of enumerate.
4. A suggestion to define enumerate(v) as zip(iota(0), v) instead of having enumerate as a standalone adapter (which will allow composing enumerate from another view)
   Author:

• zip is not yet in C++23 plans.
• zip is a heavier machinery. The current is simpler, lighter design, provides better diagnostics/compile time.

[wg21bot]

P2164R2 views::enumerate (Corentin Jabot)

[brycelelbach]

This will probably get rolled into the upcoming "Plan for C++23 ranges" effort. We'll leave it separate for now, but it should be tagged for meeting review not mailing list review.

[wg21bot]

P2164R3 views::enumerate (Corentin Jabot)