{ "version": "https://jsonfeed.org/version/1", "title": "Erlang", "description": "", "home_page_url": "go/erlang", "feed_url": "feed/erlang.json", "icon": "https://cdn.v2ex.com/navatar/bf82/2969/174_large.png?m=1323093961", "favicon": "https://cdn.v2ex.com/navatar/bf82/2969/174_normal.png?m=1323093961", "items": [ { "author": { "url": "member/themoment", "name": "themoment", "avatar": "https://cdn.v2ex.com/gravatar/253ca8d587a5e0d1b37b9ada019bcc58?s=73&d=retro" }, "url": "t/1006539", "date_modified": "2024-01-07T04:54:37+00:00", "content_html": "

\u573a\u666f\u5982\u4e0b\uff1a

Eshell V12.2.1 (abort with ^G)\n1> A1=[1,2,3].\n[1,2,3]\n2> io:format(\"~p~n\", A1).\n** exception error: bad argument\n in function io:format/2\n called as io:format(\"~p~n\",[1,2,3])\n *** argument 1: wrong number of arguments\n3> A2=[[1,2,3]].\n[[1,2,3]]\n4> io:format(\"~p~n\", A2).\n[1,2,3]\nok\n5> \n

\u7591\u95ee\uff1a

\u96be\u9053 io:format \u76f4\u63a5\u6253\u5370\u53d8\u91cf\u53c2\u6570\u7684\u8bdd\uff0c\u9700\u8981\u53d8\u91cf\u662f\u5d4c\u5957\u5217\u8868\uff1f\u6c42\u8001\u53f8\u673a\u89e3\u60d1\u4e3a\u4ec0\u4e48\u8981\u8fd9\u6837\u8bbe\u8ba1\uff08\u672c\u4eba erlang \u65b0\u624b\uff09\u3002

\u5982\u679c\u76f4\u63a5\u5728\u8c03\u7528 io:format \u7684\u65f6\u5019\uff0c\u7ed9\u53c2\u6570\u4f20\u9012\u4e00\u4e2a\u5217\u8868\u53c2\u6570\u7684\u8868\u8fbe\u5f0f\u4e5f\u5c31\u4e0d\u4f1a\u62a5\u9519\u3002

https://stackoverflow.com/questions/2523250/erlang-ioformat-and-a-hanging-web-application \u8fd9\u91cc\u6211 google \u5230\u7684\u4e00\u4e2a\u7591\u95ee\u89e3\u7b54\uff0c\u4f46\u8fd8\u662f\u6709\u4e9b\u4e0d\u660e\u767d io:format \u8c03\u7528\u7684\u65f6\u5019\uff0c\u4f20\u9012\u53d8\u91cf\u53c2\u6570\u548c\u5217\u8868\u8868\u8fbe\u5f0f\u7684\u533a\u522b\u3002

\n", "date_published": "2024-01-07T04:46:20+00:00", "title": "\u5173\u4e8e erlang \u7684 io:format \u51fd\u6570\u4f7f\u7528\u95ee\u9898\uff1a\u201c\u5217\u8868\u53d8\u91cf\u201d \u548c \u201c\u5217\u8868\u53c2\u6570\u201d", "id": "t/1006539" }, { "author": { "url": "member/dhq", "name": "dhq", "avatar": "https://cdn.v2ex.com/gravatar/b0933d91b3f6acc1cc4fb8fe172e1c1d?s=73&d=retro" }, "url": "t/831184", "title": "erlang inet_db:gethostname() \u673a\u5236\u8bf7\u6559", "id": "t/831184", "date_published": "2022-01-28T11:34:43+00:00", "content_html": "# /etc/hosts

127.0.0.1 localhost myhostname
::1 localhost

\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c
inet:gethostname(). = myhostname
inet_db:gethostname(). = localhost

\u4f46\u662f\u6211\u770b\u4e86 inet_db:set_hostname \u6e90\u7801\uff0cdb \u7684 hostname \u4e5f\u662f\u901a\u8fc7 inet_config \u6a21\u5757\u8c03\u7528 inet:get_hostname \u5b9e\u73b0\u7684\uff0c\u540e\u9762\u6211\u624b\u52a8\u8c03\u7528\u5f97\u5230\u7684\u503c\u4e5f\u662f myhostname \uff0c\u5e76\u975e localhost

----------------

\u7136\u540e\u53ea\u8981\u6211\u628a /etc/hosts \u6587\u4ef6\u6539\u6210

127.0.0.1 localhost
::1 localhost

\u7ed3\u679c\u5c31\u662f\u5bf9\u7684\u4e86\uff1a
inet:gethostname(). = myhostname
inet_db:gethostname(). = myhostname

\u5b9e\u5728\u662f\u56f0\u60d1\uff0c\u8bf7\u5404\u4f4d\u5927\u4f6c\u89e3\u60d1\u3002\u5341\u5206\u611f\u8c22\uff01" }, { "author": { "url": "member/qwertyssp", "name": "qwertyssp", "avatar": "https://cdn.v2ex.com/avatar/209b/bca1/225736_large.png?m=1757647470" }, "url": "t/796973", "title": "\u6709\u719f\u6089 erlang \u4e2d lexx \u7684.xrl \u548c yecc \u7684 .yrl \u7684\u7684\u5417\uff1f", "id": "t/796973", "date_published": "2021-08-20T03:45:06+00:00", "content_html": "

RT, \u600e\u4e48\u624d\u80fd\u770b\u61c2\u8fd9\u79cd\u8bed\u6cd5\uff1f\u6709\u4ec0\u4e48\u53ef\u4ee5\u53c2\u8003\u7684\u8d44\u6599\u5417

\n" }, { "author": { "url": "member/yfractal", "name": "yfractal", "avatar": "https://cdn.v2ex.com/gravatar/c29f3ba1a160925f0d91a1da23ee4603?s=73&d=retro" }, "url": "t/647388", "title": "\u641e\u4e86\u4e2a awesome-otp-learning", "id": "t/647388", "date_published": "2020-02-25T06:17:43+00:00", "content_html": "

\u5e76\u884c\u3001\u5e76\u53d1\u7f16\u7a0b\u662f\u8ba1\u7b97\u673a\u91cc\u975e\u5e38\u6709\u8da3\u7684\u4e3b\u9898\u3002\u800c Erlang \u6216\u8005\u8bf4 OTP \u65e0\u7591\u662f\u505a\u7684\u6700\u597d\u7684\u3002

\u4f46 OTP \u76f8\u5173\u7684\u8d44\u6599\u5374\u975e\u5e38\u5c11\u3002

\u6bd4\u5982\u5b58\u50a8\uff0c\u5173\u4e8e ETS \u7684\u5b9e\u73b0\u51e0\u4e4e\u627e\u4e0d\u5230\uff0c\u4f46\u540c\u7c7b\u578b\u7684 Redis\uff0c\u5374\u6709\u4e00\u5927\u628a\u3002

\u800c\u4e14 ETS \u8981\u6bd4 Redis \u6709\u8da3\u7684\u591a\uff0cETS \u53ef\u4ee5\u5145\u5206\u5229\u7528\u591a\u6838\u8d44\u6e90\uff0c\u800c Redis \u662f\u5355\u7ebf\u7a0b\u7684\u3002

\u8fd9\u5bf9\u60f3\u4e86\u89e3 OTP \u7684\u4eba\uff0c\u662f\u4e00\u4ef6\u5f88\u9057\u61be\u7684\u4e8b\u3002

\u6240\u4ee5\u5f00\u4e86\u8fd9\u4e2a awesome-otp-learning \u8fd9\u4e2a repo\uff0c\u7528\u6765\u6536\u96c6 OTP \u5185\u90e8\u5b9e\u73b0\u76f8\u5173\u7684\u8d44\u6599\u3002

\u5e0c\u671b\u53ef\u4ee5\u629b\u7816\u5f15\u7389\u3002

\n" }, { "author": { "url": "member/linxu", "name": "linxu", "avatar": "https://cdn.v2ex.com/gravatar/edfe1b033fb224fda97d8616facfe4ef?s=73&d=retro" }, "url": "t/507927", "title": "\u7acb\u4e2a\u8d34\uff0c\u5f00\u59cb\u5b66\u4e60\u4f7f\u7528 erlang\uff0c\u4e0e\u5de5\u4f5c\u65e0\u5173\uff0c\u81ea\u5df1\u5012\u817e\u3002", "id": "t/507927", "date_published": "2018-11-14T14:06:39+00:00", "content_html": "

2019 \u5143\u65e6\u4e4b\u524d

\u300a erlang \u7a0b\u5e8f\u8bbe\u8ba1\u300b\u548c\u300a otp \u5e76\u53d1\u7f16\u7a0b\u300b\u90fd\u8981\u8fc7\u4e24\u8fb9\u4ee5\u4e0a\u3002\n \u8bb0\u5f55\u5b66\u4e60\u7b14\u8bb0\u3002\n \u5199\u4e00\u4e2a\u5c0f\u9879\u76ee\uff0crpc \u6216\u8005 web \u6846\u67b6\u7684\u3002\n

\n" }, { "author": { "url": "member/zhongwencool", "name": "zhongwencool", "avatar": "https://cdn.v2ex.com/avatar/d443/7e60/276692_large.png?m=1514165051" }, "url": "t/422851", "date_modified": "2018-01-14T12:48:19+00:00", "content_html": "

\u4ee5\u524d Erlang \u7684\u6e90\u7801\u5b89\u88c5\u9700\u8981\u5728erlang.org\u4e0b\u8f7d\uff0c\u56fd\u5185\u901f\u5ea6\u5927\u7ea6\u53ea\u6709 30~50k\uff0c\u5bfc\u81f4\u5b89\u88c5 Erlang \u975e\u5e38\u75db\u82e6\u3002

\u73b0\u5728\u4f7f\u7528asdf\u5de5\u5177\u52a0\u53c8\u62cd\u4e91\u955c\u50cf\u53ef\u4ee5\u8fbe\u5230>1M \u7684\u4e0b\u8f7d\u901f\u5ea6\uff0c\u505a\u5230\u4e86\u4e00\u952e\u5feb\u901f\u5b89\u88c5 Erlang\u3002

Erlang \u5b89\u88c5\u6307\u5357

$ asdf install erlang 20.0\nDownloading OTP-20.0.tar.gz to /Users/zhongwen/.asdf/plugins/erlang/kerl-home/archives\n % Total % Received % Xferd Average Speed Time Time Time Current\n Dload Upload Total Spent Left Speed\n100 120 0 120 0 0 101 0 --:--:-- 0:00:01 --:--:-- 101\n100 50.3M 100 50.3M 0 0 1345k 0 0:00:38 0:00:38 --:--:-- 2512k\n

\n", "date_published": "2018-01-14T12:45:41+00:00", "title": "\u4f7f\u7528\u53c8\u62cd\u4e91\u955c\u50cf\u52a0\u901f\u4e0b\u8f7d Erlang \u6e90\u7801(\u4e0b\u8f7d\u53ea\u8981 40s)", "id": "t/422851" }, { "author": { "url": "member/zxgngl", "name": "zxgngl", "avatar": "https://cdn.v2ex.com/avatar/11e4/449a/148346_large.png?m=1458378928" }, "url": "t/257366", "title": "Elixir Forum", "id": "t/257366", "date_published": "2016-02-18T07:06:10+00:00", "content_html": "

http://elixirforum.com/

\n" }, { "author": { "url": "member/huanzh", "name": "huanzh", "avatar": "https://cdn.v2ex.com/gravatar/a15f584957d6f9105fd9b648d5c929e6?s=73&d=retro" }, "url": "t/187286", "title": "Erlang Lab \u65b0\u5f00\uff0c\u6b22\u8fce\u8bf4\u8bf4\u8bdd", "id": "t/187286", "date_published": "2015-04-29T09:12:17+00:00", "content_html": "

\u5730\u5740\uff1a http://erlab.me

\n\n

\u57df\u540d\u5f88\u65e9\u6ce8\u518c\u4e86\uff0c\u6628\u665a\u521a\u642d\u5efa\u3002

\n\n

erlanger\u4eec\u5462\uff1f

\n" }, { "author": { "url": "member/yanguango", "name": "yanguango", "avatar": "https://cdn.v2ex.com/avatar/bc94/f75c/49143_large.png?m=1711689083" }, "url": "t/153759", "title": "\u8bf7\u6559\u719f\u6089 Erlang \u7684\u540c\u5b66\u4e00\u4e2a\u95ee\u9898", "id": "t/153759", "date_published": "2014-12-13T17:37:39+00:00", "content_html": "What facilities does Erlang provides to control concurrency? Explain how these facilities could be used to implement a semaphore?" }, { "author": { "url": "member/davidlau", "name": "davidlau", "avatar": "https://cdn.v2ex.com/avatar/6e66/8e75/49468_large.png?m=1771585879" }, "url": "t/128460", "date_modified": "2014-08-17T19:55:33+00:00", "content_html": "", "date_published": "2014-08-17T17:18:11+00:00", "title": "\u6709\u7528 Erlang \u505a\u5f00\u53d1\u7684\u5417\uff1f\u4e00\u822c\u7528\u6765\u505a\u4ec0\u4e48\uff1f", "id": "t/128460" }, { "author": { "url": "member/rcmerci", "name": "rcmerci", "avatar": "https://cdn.v2ex.com/avatar/8f8d/9a0f/66285_large.png?m=1622652228" }, "url": "t/125688", "title": "erlang \u91cc\u9762\uff0c\u4e00\u4e2a\u5173\u4e8e\u5b57\u7b26\u4e32\u7684\u95ee\u9898", "id": "t/125688", "date_published": "2014-08-01T11:21:49+00:00", "content_html": "\u73b0\u5728\u60f3\u628a\u4e00\u4e2a\u5217\u8868 \u6bd4\u5982[{1,2}, {3,4}, rrr],\u8f6c\u6362\u6210\u8fd9\u4e2a\u6837\u5b50\uff1a\"[{1,2}, {3,4}, rrr]\".
\u5404\u4f4d\u5927\u5927\u600e\u4e48\u5b9e\u73b0\u554a\uff1f" }, { "author": { "url": "member/yakczh", "name": "yakczh", "avatar": "https://cdn.v2ex.com/avatar/6f32/49aa/31337_large.png?m=1422287290" }, "url": "t/98701", "title": "erlang\u89e3\u6790http\u5934\u627e\u7279\u5b9a\u7684\u5b57\u6bb5\u503c", "id": "t/98701", "date_published": "2014-01-30T07:52:58+00:00", "content_html": "http://dhq.me/the-interaction-experiment-between-erlang-and-websocket
\u5176\u4e2dws.erl 20\u884c
HeaderList1 = [list_to_tuple(binary:split(Header, <<\": \">>)) || Header >) /= nomatch],

\u8fd9\u4e2aHeader\u662f\u4ece\u54ea\u91cc\u6765\u7684\uff1f" }, { "author": { "url": "member/yakczh", "name": "yakczh", "avatar": "https://cdn.v2ex.com/avatar/6f32/49aa/31337_large.png?m=1422287290" }, "url": "t/63309", "title": "erl\u4e2d\u600e\u4e48\u5b9e\u73b0\u53d8\u91cf\u6807\u5fd7", "id": "t/63309", "date_published": "2013-03-18T08:19:32+00:00", "content_html": "\u6bd4\u5982\u3000
global flag=0

on data

if (flag == 0) {
print \"first\"; flag=1
}else {
print \"after...\"
}

\u8fd9\u79cd\u4ee3\u7801\u5728erl\u4e2d\u600e\u4e48\u5199\uff1f" }, { "author": { "url": "member/yakczh", "name": "yakczh", "avatar": "https://cdn.v2ex.com/avatar/6f32/49aa/31337_large.png?m=1422287290" }, "url": "t/63294", "title": "erl\u811a\u672c\u5982\u4f55\u4ece\u547d\u4ee4\u884c\u6267\u884c\u3000\u800c\u4e0d\u662fshell\u91cc\u9762\u6267\u884c", "id": "t/63294", "date_published": "2013-03-18T06:18:56+00:00", "content_html": "" }, { "author": { "url": "member/yakczh", "name": "yakczh", "avatar": "https://cdn.v2ex.com/avatar/6f32/49aa/31337_large.png?m=1422287290" }, "url": "t/63235", "date_modified": "2013-03-17T14:45:00+00:00", "content_html": "io:format(\"\u3000-> recv data: ~w~n\", [binary_to_list(Data)]),

\u7ed3\u679c\u663e\u793a\u3000[72,69,65,68,32,47,32,72,84,84,80,47,49,46,
48,13,10,13,10,0]

\u6362\u6210~p\u4e5f\u662f\u4e00\u6837", "date_published": "2013-03-17T14:44:34+00:00", "title": "scoket\u63a5\u6536\u7684\u5b57\u7b26\u4e32\u600e\u4e48\u5728\u670d\u52a1\u7aef\u6253\u5370\u51fa\u6765\uff1f", "id": "t/63235" }, { "author": { "url": "member/mercurylanded", "name": "mercurylanded", "avatar": "https://cdn.v2ex.com/avatar/e015/4ac8/13034_large.png?m=1353511241" }, "url": "t/57553", "title": "\u5728linode\u4e0a\u5b89\u88c5\u7684rabbitmq\u65e0\u6cd5\u542f\u52a8,\u68c0\u67e5\u4e4b\u540e\u662ferlang\u7684\u9519\u8bef.\u6709\u529e\u6cd5\u89e3\u51b3\u4e48.", "id": "t/57553", "date_published": "2013-01-14T09:11:44+00:00", "content_html": "\u62a5\u9519\u4fe1\u606f
root@li576-193:~# erl -name foo
{error_logger,{{2013,1,14},{9,9,25}},\"Protocol: ~p: register error: ~p~n\",[\"inet_tcp\",{{badmatch,{error,epmd_close}},[{inet_tcp_dist,listen,1},{net_kernel,start_protos,4},{net_kernel,start_protos,3},{net_kernel,init_node,2},{net_kernel,init,1},{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}]}
{error_logger,{{2013,1,14},{9,9,25}},crash_report,[[{initial_call,{net_kernel,init,['Argument__1']}},{pid,<0.19.0>},{registered_name,[]},{error_info,{exit,{error,badarg},[{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}},{ancestors,[net_sup,kernel_sup,<0.9.0>]},{messages,[]},{links,[#Port<0.54>,<0.16.0>]},{dictionary,[{longnames,true}]},{trap_exit,true},{status,running},{heap_size,610},{stack_size,24},{reductions,455}],[]]}
{error_logger,{{2013,1,14},{9,9,25}},supervisor_report,[{supervisor,{local,net_sup}},{errorContext,start_error},{reason,{'EXIT',nodistribution}},{offender,[{pid,undefined},{name,net_kernel},{mfargs,{net_kernel,start_link,[[foo,longnames]]}},{restart_type,permanent},{shutdown,2000},{child_type,worker}]}]}
{error_logger,{{2013,1,14},{9,9,25}},supervisor_report,[{supervisor,{local,kernel_sup}},{errorContext,start_error},{reason,shutdown},{offender,[{pid,undefined},{name,net_sup},{mfargs,{erl_distribution,start_link,[]}},{restart_type,permanent},{shutdown,infinity},{child_type,supervisor}]}]}
{error_logger,{{2013,1,14},{9,9,25}},std_info,[{application,kernel},{exited,{shutdown,{kernel,start,[normal,[]]}}},{type,permanent}]}
{\"Kernel pid terminated\",application_controller,\"{application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}}}\"}

\u6709\u4e9b\u5730\u65b9\u8bf4\u662fepmd\u7684\u8fdb\u7a0b\u628a\u7aef\u53e3\u5360\u4e86,\u4f46\u662f\u628aepmd\u6740\u6389\u4e4b\u540e\u95ee\u9898\u8fd8\u662f\u5b58\u5728..." }, { "author": { "url": "member/hpyhacking", "name": "hpyhacking", "avatar": "https://cdn.v2ex.com/avatar/489d/f172/25765_large.png?m=1366647065" }, "url": "t/53972", "title": "#erlang# \u8bf7\u5173\u6ce8 OpenPoker \u5f00\u6e90\u9879\u76ee", "id": "t/53972", "date_published": "2012-12-03T05:52:36+00:00", "content_html": "\u56fd\u5185\u5b66Erlang\u7684\u5927\u591a\u770b\u8fc7\u4e00\u7bc7\u4ecb\u7ecdOpenPoker\u9879\u76ee\u7684\u6587\u7ae0\uff0c\u7136\u540e\u5c31\u8ddf\u6253\u4e86\u9e21\u8840\u4f3c\u7684\u5f00\u59cb\u641e\u4e86\u8d77\u6765\u3002
\u21e7\u21e7\u21e7 Me too

OpenPoker\u9879\u76ee\u7684\u539f\u4f5c\u8005\u5df2\u7ecf\u4e0d\u516c\u5f00\u7ef4\u62a4\u4ee3\u7801\u4e86\uff0c\u53bb\u5e746\u6708\u4efd\u6211\u5f00\u59cb\u5173\u6ce8\u8fd9\u4e2a\u9879\u76ee\uff0c\u6574\u6574\u4e00\u5e74\u534a\u8fc7\u53bb\u4e86\uff0c\u7ecf\u8fc7\u51e0\u4e2a\u56de\u5408\u7684\u91cd\u6784\uff0c\u9879\u76ee\u88ab\u6211\u91cd\u5199\u4e86\u5927\u90e8\u5206\uff0c\u7136\u540e\u628a\u9879\u76ee\u91cd\u547d\u540d\u4e3aGenesis\uff08\u521b\u4e16\u7eaa\uff09\uff0c\u4eca\u5929\u6211\u628a\u9879\u76ee\u7684\u540d\u5b57\u53c8\u6539\u56de\u6765\u4e86\uff0c\u8fd8\u662fOpenPoker\u3002

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https://github.com/hpyhacking/openpoker
https://github.com/hpyhacking/webtekcos" }, { "author": { "url": "member/myrual", "name": "myrual", "avatar": "https://cdn.v2ex.com/avatar/23c9/7e9c/2140_large.png?m=1532506124" }, "url": "t/35634", "title": "\u5f00\u59cb\u5b66\u4e60erlang\uff0c\u8d8a\u770b\u8d8a\u8212\u5fc3\uff0c\u7a0d\u7a0d\u6709\u70b9\u62c5\u5fc3", "id": "t/35634", "date_published": "2012-05-12T12:20:58+00:00", "content_html": "\u5f00\u59cb\u770b programming erlang\uff0c\u77ed\u77ed\u7684\u51e0\u4e2a\u5c0f\u65f6\u5c31\u8ba9\u6211\u611f\u5230\u5341\u5206\u6109\u60a6\u3002\u4e4b\u524d\u5b66\u4e60f sharp\u7684\u7ecf\u9a8c\u6709\u4e86\u5f88\u5927\u5e2e\u52a9\u3002\u800c\u4e14\u53d1\u73b0\u6211\u4e4b\u524d\u7528f sharp\u7684\u65f6\u5019\u8fd8\u6709\u4e00\u4e9b\u4e0d\u662f\u5f88\u6b63\u5b97\u7684\u5730\u65b9\u3002
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\r\n
https://github.com/mochi/mochiweb", "date_published": "2011-02-26T18:30:46+00:00", "title": "mochi/mochiweb", "id": "t/9016" }, { "author": { "url": "member/Livid", "name": "Livid", "avatar": "https://cdn.v2ex.com/avatar/c4ca/4238/1_large.png?m=1776858751" }, "url": "t/2102", "date_modified": "2012-04-22T17:40:20+00:00", "content_html": "http://www.erlang-china.org", "date_published": "2010-08-28T08:22:58+00:00", "title": "Erlang-China", "id": "t/2102" }, { "author": { "url": "member/huacnlee", "name": "huacnlee", "avatar": "https://cdn.v2ex.com/avatar/7f39/f831/61_large.png?m=1396508491" }, "url": "t/1977", "date_modified": "2012-04-22T15:12:39+00:00", "content_html": "\u5c06\u539f\u7248\u7684HTML\u6539\u6210\u4e86PDF\uff0c\u518d\u8c03\u6574\u4e86\u4ee5\u4e0b\u6392\u7248\uff0c\u53ef\u4ee5\u4e0b\u8f7d\u653e\u5230iPad\u91cc\u9762\u770b\u3002\r\n
\r\n