The first time we call it, with a single argument,igets 1. Then the function returnst[1]followed by all results fromunpack(t, 2), which in turn returnst[2]followed by all results fromunpack(t, 3), and so on, until the last non-nil element. 变参 Lua中的一些函数接受可变数量的参数...
Lua 中有 8 个基本类型分别为:nil、boolean、number、string、userdata、function、thread 和 table。 局部变量: local b = 5,全局不需要 函数: 格式:function … end,可多返回值,变参... functionfoo() c =5 returnc end select(‘#’, …) 返回可变参数的长度。 select(n, …) 用于返回从起点 n 开...
AI代码解释 lua_getfield(L,LUA_GLOBALSINDEX,"f");/* function to be called */lua_pushstring(L,"how");/* 1st argument */lua_getfield(L,LUA_GLOBALSINDEX,"t");/* table to be indexed */lua_getfield(L,-1,"x");/* push result of t.x (2nd arg) */lua_remove(L,-2);/* remove...
例子 function func() print("this is a function") end t = {name = "table"} print(tostring(123)) --> 123 print(tostring("abc")) --> abc print(tostring(func)) --> function: 0x7f86348013b0 print(tostring(t)) --> table: 0x7f86348013e0 type (v) 返回 v 的类型,类型以字符串形式...
lua function 可变参数 可变参数调用 2020年7月14日 可变参数函数的声明使用省略号作为最后一个参数,例如 int printf(const char * format,...); 有关语法和自动参数转换的更多详细信息,请参阅可变参数。 从函数体访问可变参数使用以下宏: 以下宏在<stdarg.h>中定义...
return luaL_error(L, "only one argument expected but got %d", n); } r = ngx_http_lua_get_req(L);//从lua全局变量得到request结构体指针,见4.2.2 if (r == NULL) { return luaL_error(L, "request object not found"); } ngx_http_lua_check_fake_request(L, r);//检查r合法性 ...
state["foo"](); // Call function with two arguments that returns an int // The type ...
functionexpand(s)return(string.gsub(s,"$(%W+)",_G))endname="Lua";status="great"print(expand("$name is $status,isn't it?"))-->Lua is great,isn't it? 如果不确定是否指定变量具有字符串值,那么可以对它们的值调用函数tostring。在这种情况下,可以用一个函数来返回要替换的值: ...
tcp{lua_package_path'/usr/local/nginx_tcp/conf/?.lua;/usr/local/nginx_tcp/conf/lua_module/?.lua;;';lua_package_cpath'/usr/local/nginx_tcp/conf/lua_module/?.so;;';lua_shared_dictdb_lock100m;init_by_lua_file'conf/init_by_lua.lua';server{listen6666;protocoltcp_lua;process_by_lua...
Sends thetextargument out as an unfragmented data frame of thetexttype. Returns the number of bytes that have actually been sent on the TCP level. In case of errors, returnsniland a string describing the error. Back to TOC send_binary ...