diff options
| author | Cliff Click <cliffc@acm.org> | 2026-09-20 10:22:52 -0700 |
|---|---|---|
| committer | Cliff Click <cliffc@acm.org> | 2026-09-20 10:22:52 -0700 |
| commit | 942a85c5be51686d7a426d8f21e66cd8ea57e945 (patch) | |
| tree | dccf5d4ebdbce8f59dd73bc10b85fc127955ee98 /skills/chapter25-codex-notes.md | |
| parent | db3ca780c26b78cbe129a5c1bdf0d8ff7d867d1b (diff) | |
| download | Simple-942a85c5be51686d7a426d8f21e66cd8ea57e945.tar.gz Simple-942a85c5be51686d7a426d8f21e66cd8ea57e945.zip | |
Backport TypeFunPtr normalization
Diffstat (limited to 'skills/chapter25-codex-notes.md')
| -rw-r--r-- | skills/chapter25-codex-notes.md | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/skills/chapter25-codex-notes.md b/skills/chapter25-codex-notes.md index fd5ab9d9..4fb182ff 100644 --- a/skills/chapter25-codex-notes.md +++ b/skills/chapter25-codex-notes.md @@ -228,6 +228,12 @@ Consequences: that path deterministically by interning a BOTTOM-field struct before meeting two float-constant variants; `TypeTest.testCyclicLeafKinds` in 23-25 checks the resulting field, canonical identity, and meet/dual behavior. +- Function signatures acquire implicit open/closed argument tails in 23. + Normalize trailing defaults before interning: global BOTTOM/TOP in 23-24, + scalar BOT/TOP in 25. Preserve defaults before a later non-default argument. + Keep normalization out of raw cyclic allocation, whose child slots are still + incomplete. Add representative signatures to `TypeFunPtr.gather` for the + existing lattice-law tests; no separate test harness is needed. - The type lattice must remain complete, symmetric, and bounded. Run TypeTest after changing Type/Field equality, hashing, duality, meet/join, interning, serialization, or gather sets. |