当你通过key来访问 table 的时候,如果这个key没有值,那么Lua就会寻找该table的metatable(假定有metatable)中的__index key。如果__index包含一个table,Lua会在该table中查找相应的key。 local class_a = { a = 1 } local class_b = setmetatable({}, { __index = class_a }) print(class_b.a) ...
function Window.new(o) setmetatable(o ,Window.mt) return o end Window.mt.__index = function (t ,key) return 1000 end Window.mt.__newindex = function (table ,key ,value) if key == "wangbin" then rawset(table ,"wangbin" ,"yes,i am") end end w = Window.new{x = 10 ,y = ...
setmetatable(tb, { __index = function() return "not find" end }) setmetatable(tb, { __newindex = function(table, key, value) local patchKey = "version" if key == patchKey then rawset(table, patchKey, "补丁值") else rawset(table, key, value) end end }) tb.version = "正常版...
lua_pushinteger(l, lua_Integer(lua_topointer(l, idx)));// ptrlua_getfield(l, LUA_REGISTRYINDEX,"PiSerializerTableRefs");// ptr reftablelua_pushvalue(l,-2);// ptr reftable ptrlua_rawget(l,-2);// ptr reftable ???if(!lua_isnil(l,-1)) { out +="r"; pickle(l,-3, out, k...
参考链接: https://www.jianshu.com/p/78f0e050ddad TestRawGetSet.lua 1 function TestRawGetSet() 2 --rawget & rawset:绕过元表,直接获取或设置table的值 3 local a = {a1
cNamespace := cstr(namespace)ifi ==0{// top namespacewhat := C.lua_getglobal(self.State, cNamespace)ifwhat == C.LUA_TNIL {// not existsC.lua_settop(self.State,-2) C.lua_createtable(self.State,0,0) C.lua_setglobal(self.State, cNamespace) ...
原型:rawset(table, index, value) 解释:在不调用元表的情况下,给table[index]赋值为value,其中参数table必须是一个表,而参数index可以是不为nil的任何值。 usage 首先我们新建一个文件将文件命名为rawsettest.lua然后编写代码如下: --定义一个table
rawget是为了绕过__index而出现的,直接点,就是让__index方法的重写无效。(我这里用到"重写"二字,可能不太对,希望能得到纠正)Window = {}Window.prototype = {x = 0 ,y = 0 ,width = 100 ,height = 100,}Window.mt = {}function Window.new(o) setmetat ...
count = luaL_optint(L, arg+3, 0); func = hookf; mask = makemask(smask, count); } gethooktable(L); lua_pushvalue(L, arg+1); lua_rawsetp(L, -2, L1); /* set new hook */ lua_pop(L, 1); /* remove hook table */ lua_sethook(L1, func, mask, count); /* set hooks...
LuaTable类方法 LuaTable.set() LuaTable.<init>() LuaTable.next() LuaTable.get() LuaTable.length() LuaTable.keys() LuaTable.rawget() LuaTable.tableOf() LuaTable.setmetatable() LuaTable.inext() LuaTable.unpack() LuaTable.countIntKeys() LuaTable.error() LuaTable.hashmod() LuaTable.hea...