From: Ian Zimmerman <itz@speakeasy.org>
To: caml-list@inria.fr (OCAML)
Subject: Re: [Caml-list] default values for record field definitions
Date: 18 Jul 2001 23:43:22 -0700 [thread overview]
Message-ID: <86u209l8qd.fsf@itz.dsl.speakeasy.net> (raw)
In-Reply-To: "Alexander V. Voinov"'s message of "Wed, 18 Jul 2001 21:13:47 -0700"
Alexander> Why not to introduce a syntax for default values of record
Alexander> fields:
Alexander> type rec1 = { attr1: type1 = val1; attr2: type2; attr3:
Alexander> type3 = val3 }
Alexander> It this case constructions of the form
Alexander> let x = { attr2 = val2 } are possible, with other fields
Alexander> filled by val1, val3.
type rec1 = { attr1: type1; attr2: type2; attr3: type3 };
let rec1_default = { attr1 = val1; attr2 = val2; attr3 = val3 } in
let x = { rec1_default with
attr2 = val2'
}
and ...
BTW, I couldn't find this in the manual!
--
Ian Zimmerman, Oakland, California, U.S.A.
EngSoc adopts market economy: cheap is wasteful, efficient is expensive.
GPG pub key: 433BA087 9C0F 194F 203A 63F7 B1B8 6E5A 8CA3 27DB 433B A087
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next prev parent reply other threads:[~2001-07-19 6:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-19 4:13 Alexander V. Voinov
2001-07-19 6:43 ` Ian Zimmerman [this message]
2001-07-19 13:35 ` David Mentre
2001-07-19 7:02 ` Dmitry Bely
2001-07-19 16:20 ` Alexander V. Voinov
2001-07-20 9:42 ` FabienFleutot
2001-07-21 13:16 ` Daniel de Rauglaudre
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