9 lines
250 B
Swift
9 lines
250 B
Swift
func fibonacci() -> SequenceOf<UInt> {
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return SequenceOf {() -> GeneratorOf<UInt> in
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var window: (UInt, UInt, UInt) = (0, 0, 1)
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return GeneratorOf {
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window = (window.1, window.2, window.1 + window.2)
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return window.0
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}
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}
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}
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