F# enters Tiobe top 20 index for the first time

F# enters Tiobe top 20 index for the first time
tiobe.com

The confidence of the SuperCollider programming language has been set to 80%. The reason for this is quite funny. In order to prove that the TIOBE index can be manipulated easily, Adam Kennedy created an empty Perl library called Acme-SuperCollider-Programming. This was to boost the unknown programming language SuperCollider by adding it to Perl's popular library archive CPAN. Now 20% of all +"SuperCollider programming" come from this artificial library.

Yes, quite funny indeed, but not for the reasons they think. Just to show that Tiobe methodology is a joke. I don't understand how people take this seriously.

1) I use more metrics and

2) I don't go around making statements about how, from one month to the next, someone displaced someone else, or climbed into a certain ranking, or things like that.

3) I let people reweight the chart based on the metrics they like.

I think the numbers LangPop comes up with are pretty good, but by their very nature are a bit fuzzy.

    type LogicGate =
        | ON
        | OFF
        | NAND of LogicGate * LogicGate
        | NOT  of LogicGate
        | AND  of LogicGate * LogicGate
        | OR   of LogicGate * LogicGate
        | NOR  of LogicGate * LogicGate
        | XOR  of LogicGate * LogicGate
        | XNOR of LogicGate * LogicGate

    let rec evaluate input =
        match input with
        | ON         -> true
        | OFF        -> false
        | NAND(a, b) -> not ((evaluate a) && (evaluate b))
        | NOT(a)     -> (evaluate (NAND(a, a)))
        | AND(a, b)  -> (evaluate (NOT(NAND(a, b))))
        | OR(a, b)   -> (evaluate (NAND(NOT(a), NOT(b))))
        | NOR(a, b)  -> (evaluate (NOT(OR(a, b))))
        | XOR(a, b)  -> (evaluate (AND(NAND(a, b), OR(a, b))))
        | XNOR(a, b) -> (evaluate (NOT(XOR(a, b))))

    [
        NAND(OFF, OFF);
        NAND(OFF, ON);
        NAND(ON,  OFF);
        NAND(ON,  ON)
    ] |> List.map (fun x -> printfn (evaluate x))

GitHub and StackOverflow started out really biased in terms of their communities - GitHub with Ruby, and StackOverflow with Microsoft languages. Do you think they've sufficiently lost that bias?