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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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14
Task/Comma-quibbling/F-Sharp/comma-quibbling-1.fs Normal file
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let quibble list =
let rec inner = function
| [] -> ""
| [x] -> x
| [x;y] -> sprintf "%s and %s" x y
| h::t -> sprintf "%s, %s" h (inner t)
sprintf "{%s}" (inner list)
// test interactively
quibble []
quibble ["ABC"]
quibble ["ABC"; "DEF"]
quibble ["ABC"; "DEF"; "G"]
quibble ["ABC"; "DEF"; "G"; "H"]

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Task/Comma-quibbling/F-Sharp/comma-quibbling-2.fs Normal file
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> quibble [];;
val it : string = "{}"
> quibble ["ABC"];;
val it : string = "{ABC}"
> quibble ["ABC"; "DEF"];;
val it : string = "{ABC and DEF}"
> quibble ["ABC"; "DEF"; "G"];;
val it : string = "{ABC, DEF and G}"
> quibble ["ABC"; "DEF"; "G"; "H"];;
val it : string = "{ABC, DEF, G and H}"

1
Task/Comma-quibbling/F-Sharp/comma-quibbling-3.fs Normal file
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let quibble quibbler quibblee = Seq.zip quibblee quibbler //Sorry, just too good a line to miss, back in my Latin classes

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Task/Comma-quibbling/F-Sharp/comma-quibbling-4.fs Normal file
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let fN n = quibble (List.mapi(fun n _->match n with 0->"" |1-> " and " |_->", ") n |> List.rev) n
printf "{"; fN ["ABC"; "DEF"; "G"; "H"] |> Seq.iter(fun(n,g)->printf "%s%s" n g); printfn"}"
printf "{"; fN ["ABC"; "DEF"; "G"] |> Seq.iter(fun(n,g)->printf "%s%s" n g); printfn"}"
printf "{"; fN ["ABC"; "DEF"] |> Seq.iter(fun(n,g)->printf "%s%s" n g); printfn"}"
printf "{"; fN ["ABC"] |> Seq.iter(fun(n,g)->printf "%s%s" n g); printfn"}"
printf "{"; fN [] |> Seq.iter(fun(n,g)->printf "%s%s" n g); printfn"}"