lua_gettable
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"
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