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21 lines
456 B
Plaintext
21 lines
456 B
Plaintext
-- This brings `None` into scope unqualified
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use Optional None
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-- '.' is optional, this brings `None` and `Some` into
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-- scope unqualified
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use Optional None Some
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-- Can import operators this way also
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-- no need to put them in parens
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use Nat +
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-- Later imports shadow earlier ones
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use Nat - * /
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use Nat drop *
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use Nat drop
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-- use Int + -- this would cause type error below!
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> match Some (100 + 200 / 3 * 2) with
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Optional.None -> 19
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Some _ -> 20
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