lua_getglobal(L, "mytable") <== push mytable
lua_pushnumber(L, 1) <== push key 1
lua_gettable(L, -2) <== pop key 1, push mytable[1]
lua_settable
lua_getglobal(L, "mytable") <== push mytable
lua_pushnumber(L, 1) <== push key 1
lua_pushstring(L, "abc") <== push value "abc"
lua_settable(L, -3) <== mytable[1] = "abc", pop key & value
lua_rawget:
用法同lua_gettable,但更快(因为当key不存在时不用访问元方法__index)
lua_rawset:
用法同lua_settable,但更快(因为当key不存在时不用访问元方法__newindex)
lua_rawgeti必须为数值键
lua_getglobal(L, "mytable") <== push mytable
lua_rawgeti(L, -1, 1) <== push mytable[1]，作用同下面两行调用
--lua_pushnumber(L, 1) <== push key 1
--lua_rawget(L,-2) <== pop key 1, push mytable[1]
lua_rawseti必须为数值键
lua_getglobal(L, "mytable") <== push mytable
lua_pushstring(L, "abc") <== push value "abc"
lua_rawseti(L, -2, 1) <== mytable[1] = "abc", pop value "abc"
lua_getfield必须为字符串键
lua_getglobal(L, "mytable") <== push mytable
lua_getfield(L, -1, "x") <== push mytable["x"]，作用同下面两行调用
--lua_pushstring(L, "x") <== push key "x"
--lua_gettable(L,-2) <== pop key "x", push mytable["x"]
lua_setfield必须为字符串键
lua_getglobal(L, "mytable") <== push mytable
lua_pushstring(L, "abc") <== push value "abc"
lua_setfield(L, -2, "x") <== mytable["x"] = "abc", pop value "abc"