Re: key-value table from c side

[Coda Highland <chighland@...>]

On Mon, Dec 3, 2012 at 2:02 PM, Coda Highland <chighland@gmail.com> wrote:
> On Mon, Dec 3, 2012 at 1:56 PM, Philipp Kraus
> <philipp.kraus@flashpixx.de> wrote:
>>
>> Am 03.12.2012 um 22:44 schrieb Coda Highland:
>>
>>> On Mon, Dec 3, 2012 at 1:47 PM, Philipp Kraus
>>> <philipp.kraus@flashpixx.de> wrote:
>>>> Hello,
>>>>
>>>> I use lua_createtable for push std::vectors to my Lua function, it works
>>>> well.
>>>> I would like to push also the std::map as key-value structure to Lua,
>>>> so I have got
>>>>
>>>> lua_createtable(m_lua, p_map.size(), 0);
>>>>
>>>> for( typename std::map<std::string, int>::const_iterator it = p_map.begin();
>>>> it != p_map.end(); ++it )
>>>>
>>>> {
>>>>  lua_pushstring(m_lua, it->first.c_str());
>>>>  lua_pushnumber(m_lua, it->second);
>>>>  // should here a pop call on the stack?
>>>> }
>>>> // should here also a pop call on the stack?
>>>>
>>>> Which calls must be added, so I can use a table in the script, that has a
>>>> structure
>>>> table["key"] = value ?
>>>>
>>>>
>>>> In this case another question is occured: Can I used also a std::multimap?
>>>> So can Lua handle tables with
>>>> duplicated keys or must be the keys unique?
>>>>
>>>> Thanks
>>>>
>>>> Phil
>>>>
>>>
>>> You'd use lua_setfield() after those two pushes, and that'll pop them
>>> for you, and Lua keys have to be unique. Check the docs for more
>>> details.
>>
>> Thanks, but how can I use the setfield with a map like std::map<int, std::String>.
>> setfield need a char value.
>>
>> Thanks
>>
>> Phil
>>
>>
>
> lua_settable if your key is a number.
>
> /s/ Adam

Correction: if your key is a non-string, numbers aren't the only legal
non-string key type.

/s/ Adam