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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.
11 lines
248 B
Plaintext
11 lines
248 B
Plaintext
String.join.go
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: ∀(sep: String) ∀(strs: (List String)) String
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= λsep λstrs
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use P = λx String
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use cons = λh λt
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(String.concat
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sep
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(String.concat h (String.join.go sep t))
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)
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use nil = String.nil
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(~strs P cons nil) |