Functional - Re: FP tutorial for OO programmers? [LONG]

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Re: FP tutorial for OO programmers? [LONG]

Joachim Durchholz

2004-07-08, 4:02 pm

Thomas Lindgren wrote:

> Each process has a key-value dictionary, which I guess is what
> Joachim means.

Confirmed.

> You access it using put(Key, Value) and get(Key). The stored values
> as such can _not_ be mutated.

Agreed, but that still destroys immutability. If the meaning of an
Erlang value is tied to whatever a process dictionary associates with
it, and that name-value binding changes over time, then that value is
mutable for all intents and purposes even if this not technically so.

(The same goes for ETS and Mnesia tables.)

Regards,
Jo

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