4 commits

Author	SHA1	Message	Date
Kim Morrison	8b3d70d2ab	chore: fix statements of HashMap.getKey_insert (#8146)	2025-04-28 13:56:39 +00:00
Kim Morrison	d10d17ce03	chore: add HashMap/TreeMap.isSome_X simp lemmas (#8143) ... These lemmas were previously only stated the other way round, but in this direction they are both good simp lemmas, and good grind lemmas.	2025-04-28 13:48:06 +00:00
Kim Morrison	0b634e59f0	chore: add @[simp] to HashMap.get_getKey? (#8140)	2025-04-28 09:07:21 +00:00
Rob23oba	747ea853b5	feat: extensional hash maps (#8004) ... This PR adds extensional hash maps and hash sets under the names `Std.ExtDHashMap`, `Std.ExtHashMap` and `Std.ExtHashSet`. Extensional hash maps work like regular hash maps, except that they have extensionality lemmas which make them easier to use in proofs. This however makes it also impossible to regularly iterate over its entries.	2025-04-28 06:48:25 +00:00