[erlang-questions] Including function in configuration file

[Michael Truog]

On 07/09/2018 12:16 PM, Code Wiget wrote:
> So, for the ssl options such as:
> {reuse_session, fun()} {next_protocols_advertised, [binary()]}
>
> {user_lookup_fun, {fun(), term()}}, {psk_identity, string()}, {srp_identity, {string(), string()}}
>
> You have to manually set the configuration parameters, and cannot set them in a configuration file?

I use {Module :: atom(), Function :: atom()} to represent a function for configuration because the arity can be inferred from the configuration value.  I also use {{Module :: atom(), Function :: atom()}} to allow an arity 0 function to return a function, to allow a closure to be used.  The source code I use for this is at https://github.com/CloudI/CloudI/blob/95e76d30ff655562682132f9ec04b07075ce055d/src/lib/cloudi_core/src/cloudi_args_type.erl#L53-L136

Best Regards,
Michael
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