This is really the update function of a lens. Anil has taken a part of a
project that had contained a lens package into its own library,
https://github.com/avsm/ocaml-lens . Although a ppx library with lenses
would be most appropriate (since this is all still manual).



--
Nicholas Lucaroni

On Wed, Jan 28, 2015 at 12:03 PM, Christoph Höger <
christoph.hoeger@tu-berlin.de> wrote:

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>
> Dear all,
>
> I often find myself writing code like this
>
> {foo with bar = f foo.bar}
>
> and would like to avoid the redundancy of typing 'bar'. So it would be
> very convenient to have an applied-to operator:
>
> {foo with bar <- f}
>
> This would only need one additional syntactic sort at the very first
> stage, since the operator can immediately be de-sugared into the
> already-existing with-form.
>
> What do you think?
>
>
> - --
> Christoph Höger
>
> Technische Universität Berlin
> Fakultät IV - Elektrotechnik und Informatik
> Übersetzerbau und Programmiersprachen
>
> Sekr. TEL12-2, Ernst-Reuter-Platz 7, 10587 Berlin
>
> Tel.: +49 (30) 314-24890
> E-Mail: christoph.hoeger@tu-berlin.de
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