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19 lines
273 B
Text
19 lines
273 B
Text
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fun lazy (f) {
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local flag = 0, value = 0;
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return fun () {
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if flag
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then return value
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else
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value := f ();
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flag := 1;
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return value
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fi
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}
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}
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local l = lazy (fun () {write (1); return 800});
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local x = read ();
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write (l ());
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write (l ())
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