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21 lines
471 B
Text
21 lines
471 B
Text
# Record is a feature similar to object (literal notation) in JS
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# `.` means the field is public
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john = {
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.name = "John Smith"
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.age = !27
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}
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assert john.name == "John Smith"
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assert john.age == 27
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john.age.update! old -> old + 1
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assert john.age == 28
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# Record is not Dict, so `john["name"]` is invalid
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# A record whose values are all types will also behave as a type
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Person! = {
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.name = Str
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.age = Nat!
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}
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assert Person!.age == Str
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assert john in Person!
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