This PR adds `BEq` instance for `DHashMap`/`HashMap`/`HashSet` and their
extensional variants and proves lemmas relating it to the equivalence of
hashmaps/equality of extensional variants.
This PR adds support for the difference operation for
`ExtDHashMap`/`ExtHashMap`/`ExtHashSet` and proves several lemmas about
it.
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Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
This PR renames congruence lemmas for union on
`DHashMap`/`HashMap`/`HashSet`/`DTreeMap`/`TreeMap`/`TreeSet` to fit the
convention of being in the `Equiv` namespace.
This PR provides intersection operation for
`ExtDHashMap`/`ExtHashMap`/`ExtHashSet` and proves several lemmas about
it.
---------
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
(Almost) only typos in constant names and doc-strings were considered;
grammar was not considered. Also, along others,
`mkDefinitionValInferrringUnsafe` has been fixed :-)
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.
