Anonymous recursion: Difference between revisions
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>>> [ Y(fib)(i) for i in range(-2, 10) ] |
>>> [ Y(fib)(i) for i in range(-2, 10) ] |
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[None, None, 0, 1, 1, 2, 3, 5, 8, 13, 21, 34]</lang> |
[None, None, 0, 1, 1, 2, 3, 5, 8, 13, 21, 34]</lang> |
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=={{header|R}}== |
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R provides Recall() as a wrapper which finds the calling function, with limitations; Recall will not work if passed to another function as an argument. |
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<lang R>fib2 <- function(n) { |
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(n >= 0) || stop("bad argument") |
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( function(n) if (n <= 1) 1 else Recall(n-1)+Recall(n-2) )(n) |
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}</lang> |
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=={{header|Ruby}}== |
=={{header|Ruby}}== |
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