Comments on: Erlang eval and dynamic dispatch http://nutrun.com/weblog/erlang-eval-and-dynamic-dispatch/ nutrun Sat, 06 Sep 2008 04:32:00 +0000 http://wordpress.org/?v=2.6.1 By: links for 2008-05-20 « Bloggitation http://nutrun.com/weblog/erlang-eval-and-dynamic-dispatch/#comment-885 links for 2008-05-20 « Bloggitation Tue, 20 May 2008 00:27:23 +0000 http://nutrun.com/?p=141#comment-885 [...] Erlang eval and dynamic dispatch (tags: erlang programming) [...] [...] Erlang eval and dynamic dispatch (tags: erlang programming) [...]

]]> By: Kevin Smith http://nutrun.com/weblog/erlang-eval-and-dynamic-dispatch/#comment-876 Kevin Smith Sun, 18 May 2008 13:19:30 +0000 http://nutrun.com/?p=141#comment-876 I get what you're doing but outside of the novelty factor, I don't really see why this is useful. You can get largely the same behavior using regular pattern matching and guards: -module(test). -compile([export_all]). hello() -> "hello, world". hello(Who) when is_list(Who) -> "hello, " ++ Who. ---- 1> M = test. test 2> F = hello. hello 3> M:F(). "hello, world" 4> M:F("Kevin"). "hello, Kevin" 5> I get what you’re doing but outside of the novelty factor, I don’t really see why this is useful. You can get largely the same behavior using regular pattern matching and guards:

-module(test).

-compile([export_all]).

hello() ->
“hello, world”.

hello(Who) when is_list(Who) ->
“hello, ” ++ Who.
—-

1> M = test.
test
2> F = hello.
hello
3> M:F().
“hello, world”
4> M:F(”Kevin”).
“hello, Kevin”
5>

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