[Haskell-cafe] Destructive updates to plain ADTs

Johan Tibell johan.tibell at gmail.com
Sun Sep 9 11:24:47 CEST 2012

On Sun, Sep 9, 2012 at 2:19 AM, MigMit <miguelimo38 at yandex.ru> wrote:
> Why modify it instead of creating the new one and let the previous tree get garbage collected?

You can avoid a bunch of copying and allocation by modifying the nodes
in-place. See


for some numbers.

-- Johan

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