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Now, there are two local binders: let x = ... use x = ... The 'let' binder will create a local definition, type-check it, and assign a name to it. When compiled, it will create 'dup' nodes. The 'use' binder is just an alias. It will not bind a new variable, and, when compiled, will create inline copies. Also, for type-checking, it allows creating aliases that are definitionaly equal for the checker.
15 lines
368 B
Plaintext
15 lines
368 B
Plaintext
BBT.from_list
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: ∀(K: *)
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∀(V: *)
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∀(cmp: ∀(a: K) ∀(b: K) Cmp)
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∀(list: (List (Pair K V)))
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(BBT K V)
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= λK λV λcmp λlist
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use P = λx (BBT K V)
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use cons = λhead λtail
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use P = λx (BBT K V)
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use new = λkey λval
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(BBT.set K V cmp key val (BBT.from_list K V cmp tail))
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(~head P new)
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use nil = (BBT.tip K V)
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(~list P cons nil) |