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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.
7 lines
248 B
Plaintext
7 lines
248 B
Plaintext
String.wrap.go
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: ∀(str: String) ∀(end: String) String
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= λstr λend
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use P = λx ∀(end: String) String
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use cons = λh λt λend (String.cons h (String.wrap.go t end))
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use nil = λend (String.concat end String.nil)
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(~str P cons nil end) |