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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.
10 lines
375 B
Plaintext
10 lines
375 B
Plaintext
BBT.got_size
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: ∀(K: *) ∀(V: *) ∀(map: (BBT K V))
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(Pair #U60 (BBT K V))
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= λK λV λmap
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use P = λx (Pair #U60 (BBT K V))
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use bin = λsize λnext.key λnext.val λnext.lft λnext.rgt
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use map = (BBT.bin K V size next.key next.val next.lft next.rgt)
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(Pair.new #U60 (BBT K V) size map)
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use tip = (Pair.new #U60 (BBT K V) #0 (BBT.tip K V))
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(~map P bin tip) |