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December 23, 2015 06:29
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Convert Excel column to id
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| let columnNum = | |
| let charValues = | |
| ['A'..'Z'] | |
| |> Seq.mapi (fun i c -> c, i + 1) | |
| |> map | |
| fun (code: string) -> | |
| (Seq.toList code, (0,-1)) | |
| ||> List.foldBack(fun v (depth, total) -> depth + 1, total + (pown 26 depth * charValues.[v])) | |
| |> snd |
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