24 lines
734 B
Plaintext
24 lines
734 B
Plaintext
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utop # type person = { name: string ; age: int ; human : bool };;
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type person = { name : string; age : int; human : bool; }
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utop # let david = { name = "david" ; age = 32 ; human = false };;
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val david : person = {name = "david"; age = 32; human = false}
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utop # let mary = { david with name = "mary" };;
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val mary : person = {name = "mary"; age = 32; human = false}
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utop # let toggle_human (p : person) = { p with human = not p.human };;
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val toggle_human : person -> person = <fun>
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utop # let () =
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let david' = toggle_human david in
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if david'.human then
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print_endline "david is human"
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else
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print_endline "david is not human"
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;;
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david is human
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(** From https://o1-labs.github.io/ocamlbyexample/basics-records.html *)
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