fae58e140d
The old 'HashTable' type is now the union of the other 3 hash types. - all operations that used to work on 'HashTable's still work, but some now have more specific outputs - `#hash` literals have type `ImmutableHash` - `immutable?` and `hash-weak?` are filters - `Mutable-` and `Weak-` hashes have corresponding `Top` types, `HashTableTop` is now a union - the contact for `(U (Immutable-Hash K1 V1) (Mutable-Hash K2 V2))` is ONE `hash/c` Minor notes: - renamed internal identifiers containing 'Hashtable' to all use 'HashTable' - add Racket guide/reference 'secref' functions
16 lines
470 B
Racket
16 lines
470 B
Racket
#lang typed/racket
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;; Reported by Matthew Eric Basset
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;; https://groups.google.com/forum/#!searchin/racket-users/weirdness%7Csort:date/racket-users/g6UmwgZWtzE/1czSRfk2AgAJ
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;; Works "as expected" on 6.5
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(void
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(ann (hash 'a 1 'b "cat") (HashTable Any Any)))
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(define t* (hash 'a 1 'b "cat"))
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;; These `ann` do not work on 6.5, should work because `hash` makes an immutable table
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(void
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(ann t* (HashTable Any Any))
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(ann t* (HashTable Symbol (U String Integer))))
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