[erlang-questions] The re module documentation

Doug Edmunds <>
Mon Jun 16 17:35:53 CEST 2008

On Mon, Jun 16, 2008 at 8:11 AM, Sverker Eriksson <>

> http://en.wiktionary.org/wiki/opaque:
> "(computing) Describes a type for which higher-level callers have no
> knowledge of data values or their representations; all operations are
> carried out by the type's defined abstract operators."
> /Sverker, Erlang/OTP Ericsson
> Thanks.
The only other usage of opaque datatype that I find in the docs is  in


"This function is used to check if a term is a valid compiled
The compiled match_spec is an opaque datatype which can *not* be sent
between Erlang nodes nor be stored on disk. Any attempt to create an
external representation of a compiled match_spec will result in an empty
binary (<<>>)."

-- dae
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