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Seq.skipWhile
f#

Hello,

Just getting started with F# and I'm stuck on the following:

let temp =
Data
|> Seq.map(fun values -> float values.[0], float values.[1])
|> Seq.skipWhile(fun values -> values.[1] > 1)
temp

I'm basically trying to skip when values[1] is greater than 1, why is this not working I get error:

error FS0191: The operator 'expr.[idx]' has been used an object of indeterminate type based on information prior to this program point. This is deprecated. Consider adding further type constraints

.

Assuming that e.g. Data is an array of arrays, then the second 'values' is a 2-tuple since the map call is returning a sequence of 2-tuples. And tuples don't support the indexing operator .[] (If you are using VS, you can see this by hovering the mouse over 'values' after skipWhile to see its type.)

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let Data = [| [|1|]; [|2|] |]
let temp = 
        Data
        |> Seq.map(fun values -> float values.[0], float values.[1])
        |> Seq.skipWhile(fun values -> values.[1] > 1)
temp

What are you trying to do?

By on 6/16/2009 4:49 PM ()

Figured it out by watching the F# tutorial, basically I needed to create a function that took the tuple that returned bool based on the values in the tuple, its a different way of doing things that I'm used to but it works great.

By on 6/16/2009 5:47 PM ()

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