Erlang点滴--try语句里的尾递归

 1 -module(test).
 2 -compile(export_all).
 3 
 4 -define(LOOP_CNT, 10000000).
 5 
 6 start_loop() ->
 7     timer:tc(fun loop/1, [?LOOP_CNT]).
 8 loop(N) when N =< 0 ->
 9     erlang:process_info(erlang:self(), stack_size);
10 loop(N) ->
11     loop(N-1).
12 
13 start_try_loop() ->
14     timer:tc(fun try_loop/1, [?LOOP_CNT]).
15 try_loop(N) when N =< 0 ->
16     erlang:process_info(erlang:self(), stack_size);
17 try_loop(N) ->
18     try try_loop(N-1) catch _:_ -> void end.
19 
20 start_of_loop() ->
21     timer:tc(fun of_loop/1, [?LOOP_CNT]).
22 of_loop(N) when N =< 0 ->
23     erlang:process_info(erlang:self(), stack_size);
24 of_loop(N) ->
25     try N=N of _ -> of_loop(N-1) catch _:_ -> void end.
26 
27 start_catch_loop() ->
28     timer:tc(fun catch_loop/1, [?LOOP_CNT]).
29 catch_loop(N) when N =< 0 ->
30     erlang:process_info(erlang:self(), stack_size);
31 catch_loop(N) ->
32     try N=e of _ -> void catch _:_ -> catch_loop(N-1) end.