• As for the d(n) field, let's say this represents a date on each parent line. I want to sort all of the parent lines by date.
  • If lines are not immediately split, then perhaps the entire line could be used as a hash key?

    Sorry for not explaining this better...

    BTW,

    You have concatenated the children lines to the parent line -- this is not what I'm trying to do.

    The children lines should be a sub-array of their parent.

    Where do you want *them* to go today?

    In reply to Re^2: Selecting the right data structure by thezip
    in thread Selecting the right data structure by thezip

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