17 lines
512 B
TypeScript
17 lines
512 B
TypeScript
// no errors expected
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var combine: <T, S>(f: (_: T) => S) =>
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<U>(g: (_: U) => T) =>
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(x: U) => S
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= <T, S>(f: (_: T) => S) =>
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<U>(g: (_: U) => T) =>
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(x: U) => f(g(x))
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var foo: <K, N>(g: (x: K) => N) =>
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(h: <M>(_: (_: K) => (_: M) => M) => (_: M) => M) =>
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<R>(f: (_: N) => (_: R) => R) => (_: R) => R
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= <K, N>(g: (x: K) => N) =>
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(h: <M>(_: (_: K) => (_: M) => M) => (_: M) => M) =>
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<R>(f: (_: N) => (_: R) => R) => h(combine(f)(g)) |