[erlang-questions] about fun vs. functions schisofrenia
Fri Jan 11 13:47:35 CET 2008
Andras Georgy Bekes <> writes:
> If you want to store a reference to a function in the long term
> (surviving module upgrades), store the module and function name. When
> you want to use it as the argument of a higher-order function, use the
> fun Module:Function/Arity
> to "convert" your function reference to a fun.
A fun defined as fun Module:Function/Arity *will* survive code reloading.
It has a different internal representation than a fun defined as fun Function/Arity.
So it is safe to store the fun instead.
Björn Gustavsson, Erlang/OTP, Ericsson AB
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