pass by ref, no matching overload found

[Сергей Владимирович]

I want to pass parameters in method by reference.

class Node : public EventReceiver

{

public:

virtual void setTag ( const std::string& name, const std::string& value )

...

};

And this is luabind code to expose Node to lua:

class_<Node, EventReceiver> ( "Node" )

.def ( constructor<> () )

.def ( "setTag", &Node::setTag )

...

I want to set tag for node from lua script:

node = scene:find ( "NewGameButton" )

node:setTag ( "scale", value )

I get luabind error:

No matching overload found, candidates:

void setTag(Node&,std::string const&,std::string const&)

But this line works fine

node:setTag ( "scale", "str_value" )

How to get setTag working in both cases?

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[Christian N.]

On 2015-03-31 23:33 +0200, Сергей ВладимировичСергей Владимирович wrote:
 > [...]

>
> I want to set tag for node from lua script:
> node = scene:find ( "NewGameButton" )
> node:setTag ( "scale", value )
>
> I get luabind error:
> No matching overload found, candidates:
> void setTag(Node&,std::string const&,std::string const&)
>
> But this line works fine
> node:setTag ( "scale", "str_value" )
>
> How to get setTag working in both cases?
>

It seems that value is not a string. AFAIR luabind does not implicitly
convert numbers to strings, so you should try

     node:setTag ( "scale", tostring( value ) )

where tostring() is a Lua standard library function
(http://www.lua.org/manual/5.1/manual.html#pdf-tostring).

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[Сергей Владимирович]

Thanks. Worked.

2015-04-01 0:41 GMT+03:00 Christian N. <[hidden email]>:

On 2015-03-31 23:33 +0200, Сергей ВладимировичСергей Владимирович wrote:
 > [...]
>
> I want to set tag for node from lua script:
> node = scene:find ( "NewGameButton" )
> node:setTag ( "scale", value )
>
> I get luabind error:
> No matching overload found, candidates:
> void setTag(Node&,std::string const&,std::string const&)
>
> But this line works fine
> node:setTag ( "scale", "str_value" )
>
> How to get setTag working in both cases?
>

It seems that value is not a string. AFAIR luabind does not implicitly
convert numbers to strings, so you should try

     node:setTag ( "scale", tostring( value ) )

where tostring() is a Lua standard library function
(http://www.lua.org/manual/5.1/manual.html#pdf-tostring).

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things parallel software development, from weekly thought leadership blogs to
news, videos, case studies, tutorials and more. Take a look and join the
conversation now. http://goparallel.sourceforge.net/
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