erlang polymorphism: multiple implementations of the same contract -


please advice: what's correct erlang way have separated implementations contract , how switch between them?

thanks hints! yf

while others mention behaviour feature, merely small helper make sure implement functions in module callback structure. if have 2 implementations, a , b, , both implements same functions, can statically substitute a b in calling module. static configuration have better implementation, preferable.

if question of more dynamic nature, can do

 mod = a,  mod:f(args).

and in code set mod appropriately. lets dynamically control module call while program running. not entirely clear of 2 want.


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