P2688 R2 Pattern Matching: match Expression

[wg21bot]

P2688R0 Pattern Matching Discussion for Kona 2022 (Michael Park)

[erichkeane]

Reviewed in Kona along with #1064 :

Regardless of pattern matching, we should encourage pursuing is query/as cast unification in the language.

SF	F	N	A	SA
7	10	11	4	1

Result: Consensus for encouragement

EWG Prefers composition over chaining in pattern matching syntax.

SF	F	N	A	SA
13	9	2	1	0

Result: Consensus

Who has tried the pattern matching version Bruno did on Godbolt (presented by Michael)?
6 of 19-remote + 35-in-room

Who has tried the pattern matching implementation version that Herb/Sean did in CPPFront/Circle?
3 of 19-remote + 35-in-room

[wg21bot]

P2688R1 Pattern Matching: match Expression (Michael Park)

[jfbastien]

The paper was seen in Tokyo.

Poll: P2688r1 pattern matching: template instantiation should not be ill-formed at instantiation if the equivalent non-template would be ill-formed

| SF | F | N | A | SA |
| 0 | 3 | 17 | 10 | 2 |

Not consensus.

Poll: P2688r1 pattern matching: EWG encourages more work on pattern matching, knowing our time is limited.

| SF | F | N | A | SA |
| 34 | 9 | 0 | 0 | 0 |

[wg21bot]

P2688R2 Pattern Matching: match Expression (Michael Park)