How to bind a static member variable
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How to bind a static member variable
 
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Hello,
I cannot find any reference on how to bind a static member variable, so that I can access it from lua as myclass.staticmember. Cheers. ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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Hi, In the (rather old) docs, there's an example binding static function: http://www.rasterbar.com/products/luabind/docs.html#nested-scopes-and-static-functionsOn Sun, Apr 7, 2013 at 1:52 PM, Lorenzo Pistone <[hidden email]> wrote: Hello, ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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I've tried to do so, but I'm getting
"def_readwrite is not a member of luabind". I have successfully
bound a static member _function_ though (with .def).
On 04/08/2013 08:40 AM, Iliya Trendafilov wrote:
------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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In reply to this post by Lorenzo Pistone
If you don't mind creating a copy, you can simply put the value in a variable in the appropriate Lua namespace.
On 07.04.2013, at 12:52, Lorenzo Pistone <[hidden email]> wrote: > Hello, > I cannot find any reference on how to bind a static member variable, so > that I can access it from lua as myclass.staticmember. > > Cheers. > > ------------------------------------------------------------------------------ > Minimize network downtime and maximize team effectiveness. > Reduce network management and security costs.Learn how to hire > the most talented Cisco Certified professionals. Visit the > Employer Resources Portal > http://www.cisco.com/web/learning/employer_resources/index.html > _______________________________________________ > luabind-user mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/luabind-user ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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I don't know how to do that either. Also, it would not really be a
problem, but I'd like to master the API. On 04/08/2013 12:42 PM, Tony Kostanjsek wrote: > If you don't mind creating a copy, you can simply put the value in a variable in the appropriate Lua namespace. > > On 07.04.2013, at 12:52, Lorenzo Pistone <[hidden email]> wrote: > >> Hello, >> I cannot find any reference on how to bind a static member variable, so >> that I can access it from lua as myclass.staticmember. >> >> Cheers. >> >> ------------------------------------------------------------------------------ >> Minimize network downtime and maximize team effectiveness. >> Reduce network management and security costs.Learn how to hire >> the most talented Cisco Certified professionals. Visit the >> Employer Resources Portal >> http://www.cisco.com/web/learning/employer_resources/index.html >> _______________________________________________ >> luabind-user mailing list >> [hidden email] >> https://lists.sourceforge.net/lists/listinfo/luabind-user > ------------------------------------------------------------------------------ > Minimize network downtime and maximize team effectiveness. > Reduce network management and security costs.Learn how to hire > the most talented Cisco Certified professionals. Visit the > Employer Resources Portal > http://www.cisco.com/web/learning/employer_resources/index.html > _______________________________________________ > luabind-user mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/luabind-user ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
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In reply to this post by Lorenzo Pistone
Did you try .def_readonly? Maybe the error is a result of trying to bind a const type with .def
Am 08.04.2013 um 12:32 schrieb Lorenzo Pistone:
------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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still the same. This is a chopped
down version of my code:
#include <luabind/luabind.hpp> struct A{ static const A a; }; const A A::a; int main(){ luabind::scope sc = luabind::class_<A>("A") .scope[luabind::def_readonly("a", &A::a)]; } On 04/08/2013 01:17 PM, Timo Boll wrote: Did you try .def_readonly? Maybe the error is a result of trying to bind a const type with .def ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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On Mon, Apr 8, 2013 at 6:33 AM, Lorenzo Pistone <[hidden email]> wrote: #include <luabind/luabind.hpp> It seems as though while functions can be registered "globally" (in a namespace rather than a class member), no such provision was made for variables/data. I've added a test here: https://github.com/rpavlik/luabind/blob/static-members/test/test_static_member.cpp - the version committed succeeds but uncommenting the data members causes a compile failure just as you had noticed. (There is a luabind::def function that mimics the .def member of luabind::class_, but no such luabind::def_readonly...) I'm not sure if a workaround of setting the variable would work - I've had a tough time trying to figure out how to bind references to values/data to Lua with LuaBind. Ryan Ryan Pavlik HCI Graduate Student Virtual Reality Applications Center Iowa State University [hidden email] http://academic.cleardefinition.com ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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So how does one bind instances of
objects in globally, or in a namespace? Possibly avoiding that
the lua part will ever override or unreference them.
On 04/08/2013 08:45 PM, Ryan Pavlik wrote:
------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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In reply to this post by Ryan Pavlik-4
if A::a is a static const, you don't really need a reference to that exact instance, but rather only the value in the correct namespace in Lua. I haven't touched luabind in a while, so treat the following more like pseudo code:
lua_State* L = ... luabind::object _G = luabind::globals(L); _G["A"] = luabind::newTable(); _G["A"]["a"] = luabind::object(); _G["A"]["a"] = A::a; I must admit I forgot how to correctly implement that last assignment. Again, it's been a while. Basically, what you should try is to write the luabind C++ equivalent of the following lua code: _G.A = {} _G.A.a = <your value> hth, Tony On 08.04.2013, at 20:45, Ryan Pavlik <[hidden email]> wrote: > > On Mon, Apr 8, 2013 at 6:33 AM, Lorenzo Pistone <[hidden email]> wrote: > #include <luabind/luabind.hpp> > struct A{ > static const A a; > }; > const A A::a; > int main(){ > luabind::scope sc = luabind::class_<A>("A") > .scope[luabind::def_readonly("a", &A::a)]; > } > > It seems as though while functions can be registered "globally" (in a namespace rather than a class member), no such provision was made for variables/data. I've added a test here: https://github.com/rpavlik/luabind/blob/static-members/test/test_static_member.cpp - the version committed succeeds but uncommenting the data members causes a compile failure just as you had noticed. (There is a luabind::def function that mimics the .def member of luabind::class_, but no such luabind::def_readonly...) I'm not sure if a workaround of setting the variable would work - I've had a tough time trying to figure out how to bind references to values/data to Lua with LuaBind. > > Ryan > > > -- > Ryan Pavlik > HCI Graduate Student > Virtual Reality Applications Center > Iowa State University > > [hidden email] > http://academic.cleardefinition.com > ------------------------------------------------------------------------------ > Minimize network downtime and maximize team effectiveness. > Reduce network management and security costs.Learn how to hire > the most talented Cisco Certified professionals. Visit the > Employer Resources Portal > http://www.cisco.com/web/learning/employer_resources/index.html_______________________________________________ > luabind-user mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/luabind-user ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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The real code does bind other things rather than only a static member.
So I guess I have to "reuse"the table that the class definition creates (is it a table that it is being created?). So... do I just fetch that with the method you proposed, and add my static member? On 04/08/2013 09:18 PM, Tony Kostanjsek wrote: > if A::a is a static const, you don't really need a reference to that exact instance, but rather only the value in the correct namespace in Lua. I haven't touched luabind in a while, so treat the following more like pseudo code: > > lua_State* L = ... > luabind::object _G = luabind::globals(L); > _G["A"] = luabind::newTable(); > _G["A"]["a"] = luabind::object(); > _G["A"]["a"] = A::a; > > I must admit I forgot how to correctly implement that last assignment. Again, it's been a while. > Basically, what you should try is to write the luabind C++ equivalent of the following lua code: > > _G.A = {} > _G.A.a = <your value> > > hth, > Tony > > > On 08.04.2013, at 20:45, Ryan Pavlik <[hidden email]> wrote: > >> On Mon, Apr 8, 2013 at 6:33 AM, Lorenzo Pistone <[hidden email]> wrote: >> #include <luabind/luabind.hpp> >> struct A{ >> static const A a; >> }; >> const A A::a; >> int main(){ >> luabind::scope sc = luabind::class_<A>("A") >> .scope[luabind::def_readonly("a", &A::a)]; >> } >> >> It seems as though while functions can be registered "globally" (in a namespace rather than a class member), no such provision was made for variables/data. I've added a test here: https://github.com/rpavlik/luabind/blob/static-members/test/test_static_member.cpp - the version committed succeeds but uncommenting the data members causes a compile failure just as you had noticed. (There is a luabind::def function that mimics the .def member of luabind::class_, but no such luabind::def_readonly...) I'm not sure if a workaround of setting the variable would work - I've had a tough time trying to figure out how to bind references to values/data to Lua with LuaBind. >> >> Ryan >> >> >> -- >> Ryan Pavlik >> HCI Graduate Student >> Virtual Reality Applications Center >> Iowa State University >> >> [hidden email] >> http://academic.cleardefinition.com >> ------------------------------------------------------------------------------ >> Minimize network downtime and maximize team effectiveness. >> Reduce network management and security costs.Learn how to hire >> the most talented Cisco Certified professionals. Visit the >> Employer Resources Portal >> http://www.cisco.com/web/learning/employer_resources/index.html_______________________________________________ >> luabind-user mailing list >> [hidden email] >> https://lists.sourceforge.net/lists/listinfo/luabind-user > > ------------------------------------------------------------------------------ > Minimize network downtime and maximize team effectiveness. > Reduce network management and security costs.Learn how to hire > the most talented Cisco Certified professionals. Visit the > Employer Resources Portal > http://www.cisco.com/web/learning/employer_resources/index.html > _______________________________________________ > luabind-user mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/luabind-user ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
Re: How to bind a static member variable
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yes. IIRC you can just bind your class "A", then treat _G.A as a table and just add stuff to it, like the static const value.
On 08.04.2013, at 21:21, Lorenzo Pistone <[hidden email]> wrote: > The real code does bind other things rather than only a static member. > So I guess I have to "reuse"the table that the class definition creates > (is it a table that it is being created?). So... do I just fetch that > with the method you proposed, and add my static member? > > On 04/08/2013 09:18 PM, Tony Kostanjsek wrote: >> if A::a is a static const, you don't really need a reference to that exact instance, but rather only the value in the correct namespace in Lua. I haven't touched luabind in a while, so treat the following more like pseudo code: >> >> lua_State* L = ... >> luabind::object _G = luabind::globals(L); >> _G["A"] = luabind::newTable(); >> _G["A"]["a"] = luabind::object(); >> _G["A"]["a"] = A::a; >> >> I must admit I forgot how to correctly implement that last assignment. Again, it's been a while. >> Basically, what you should try is to write the luabind C++ equivalent of the following lua code: >> >> _G.A = {} >> _G.A.a = <your value> >> >> hth, >> Tony >> >> >> On 08.04.2013, at 20:45, Ryan Pavlik <[hidden email]> wrote: >> >>> On Mon, Apr 8, 2013 at 6:33 AM, Lorenzo Pistone <[hidden email]> wrote: >>> #include <luabind/luabind.hpp> >>> struct A{ >>> static const A a; >>> }; >>> const A A::a; >>> int main(){ >>> luabind::scope sc = luabind::class_<A>("A") >>> .scope[luabind::def_readonly("a", &A::a)]; >>> } >>> >>> It seems as though while functions can be registered "globally" (in a namespace rather than a class member), no such provision was made for variables/data. I've added a test here: https://github.com/rpavlik/luabind/blob/static-members/test/test_static_member.cpp - the version committed succeeds but uncommenting the data members causes a compile failure just as you had noticed. (There is a luabind::def function that mimics the .def member of luabind::class_, but no such luabind::def_readonly...) I'm not sure if a workaround of setting the variable would work - I've had a tough time trying to figure out how to bind references to values/data to Lua with LuaBind. >>> >>> Ryan >>> >>> >>> -- >>> Ryan Pavlik >>> HCI Graduate Student >>> Virtual Reality Applications Center >>> Iowa State University >>> >>> [hidden email] >>> http://academic.cleardefinition.com >>> ------------------------------------------------------------------------------ >>> Minimize network downtime and maximize team effectiveness. >>> Reduce network management and security costs.Learn how to hire >>> the most talented Cisco Certified professionals. Visit the >>> Employer Resources Portal >>> http://www.cisco.com/web/learning/employer_resources/index.html_______________________________________________ >>> luabind-user mailing list >>> [hidden email] >>> https://lists.sourceforge.net/lists/listinfo/luabind-user >> >> ------------------------------------------------------------------------------ >> Minimize network downtime and maximize team effectiveness. >> Reduce network management and security costs.Learn how to hire >> the most talented Cisco Certified professionals. Visit the >> Employer Resources Portal >> http://www.cisco.com/web/learning/employer_resources/index.html >> _______________________________________________ >> luabind-user mailing list >> [hidden email] >> https://lists.sourceforge.net/lists/listinfo/luabind-user > > > ------------------------------------------------------------------------------ > Minimize network downtime and maximize team effectiveness. > Reduce network management and security costs.Learn how to hire > the most talented Cisco Certified professionals. Visit the > Employer Resources Portal > http://www.cisco.com/web/learning/employer_resources/index.html > _______________________________________________ > luabind-user mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/luabind-user ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ luabind-user mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/luabind-user |
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