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| author | Tuncer Ayaz <[email protected]> | 2013-03-07 11:41:28 +0100 |
|---|---|---|
| committer | Tuncer Ayaz <[email protected]> | 2013-03-07 11:41:28 +0100 |
| commit | 0792d2102908a1008b08c37e1015ba5e6cb88882 (patch) | |
| tree | 9a53d8b5029819a37fb17c7af050d67a8907ace3 /system/doc/design_principles/fsm.xml | |
| parent | 9e4a37c95739a524db9f7b8f7f64fa3c25264879 (diff) | |
| download | otp-0792d2102908a1008b08c37e1015ba5e6cb88882.tar.gz otp-0792d2102908a1008b08c37e1015ba5e6cb88882.tar.bz2 otp-0792d2102908a1008b08c37e1015ba5e6cb88882.zip | |
Fix gen_fsm example code
Diffstat (limited to 'system/doc/design_principles/fsm.xml')
| -rw-r--r-- | system/doc/design_principles/fsm.xml | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/system/doc/design_principles/fsm.xml b/system/doc/design_principles/fsm.xml index bd19b88e2d..7decbb48cd 100644 --- a/system/doc/design_principles/fsm.xml +++ b/system/doc/design_principles/fsm.xml @@ -75,7 +75,7 @@ StateName(Event, StateData) -> -export([init/1, locked/2, open/2]). start_link(Code) -> - gen_fsm:start_link({local, code_lock}, code_lock, Code, []). + gen_fsm:start_link({local, code_lock}, code_lock, lists:reverse(Code, []). button(Digit) -> gen_fsm:send_event(code_lock, {button, Digit}). @@ -106,7 +106,8 @@ open(timeout, State) -> calling <c>code_lock:start_link(Code)</c>:</p> <code type="none"> start_link(Code) -> - gen_fsm:start_link({local, code_lock}, code_lock, Code, []).</code> + gen_fsm:start_link({local, code_lock}, code_lock, lists:reverse(Code), []). + </code> <p><c>start_link</c> calls the function <c>gen_fsm:start_link/4</c>. This function spawns and links to a new process, a gen_fsm.</p> <list type="bulleted"> @@ -130,8 +131,8 @@ start_link(Code) -> corresponding to one process contained in one module.</p> </item> <item> - <p>The third argument, <c>Code</c>, is a term which is passed - as-is to the callback function <c>init</c>. Here, <c>init</c> + <p>The third argument, <c>Code</c>, is a list of digits which is passed + reversed to the callback function <c>init</c>. Here, <c>init</c> gets the correct code for the lock as indata.</p> </item> <item> |