F# selecting a single value in an array -


i diving f# first time, trying follow luca's example found here. doing pretty parsing input file, stuck in trying filter sequence based on value of 1 value in array. here 

    let filestream = new filestream(path,filemode.open,fileaccess.read)     let streamreader = new streamreader(filestream)     let contents = streamreader.readtoend()     let cleancontents =         contents.split([|'\n'|])         |> seq.map(fun line -> line.split([|'\t'|]))         |> seq.filter(fun values -> values |> seq.length = 6)

when try , add this, 

|> seq.filter(fun values -> values |> values[0].length = 8)

i compile error. want check 1st column in sequence has 8 characters only, no more or less. in advance.

the issue forward piping "values". makes no sense.

|> seq.filter(fun values -> values[0].length = 8)

should work.

(update: missed comments question , not ildjarn answered first in comment)


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