[erlang-questions] Invoking a function based on name only
Fri Sep 14 07:24:17 CEST 2007
It is worth noting that if the number of arguments is known at compile
time, it's more efficient to use Module:Function(Arg1, Arg2, ...) than
From the the Efficiency Guide : "The syntax |M:Foo(A1,A2,An)| (also
referred to as implicit apply, where M and Foo are bound variables)
where equivalent with |apply(M,Foo,[A1,A2,An])| in releases pre
OTP-R10B. The compiler will now optimize this syntax giving it better
performance than apply/3"
Dustin Sallings a écrit :
> On Sep 13, 2007, at 15:42 , Kevin A. Smith wrote:
>> If I have the name of the function and the module it belongs to, how
>> can I invoke it? I tried cobbling together erl_scan and friends but
>> the embedded macros in the code gave me some heartburn. Any pointers?
> 1> apply(list_to_atom("erlang"), list_to_atom("now"), ).
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