"... no matching function for call to ‘ofXml::getValue ..."

@marclava wrote:

I’m trying to use “old” addons on Linux with the latest nightly build, and the ofXml class is unhappy.
In testApp.cpp, setting is declared as ofXml settings;
How to fix this error? :

/home/marc/of/nightly/addons/ofxXMPP/example/src/testApp.cpp: In member function ‘virtual void testApp::setup()’:
/home/marc/of/nightly/addons/ofxXMPP/example/src/testApp.cpp:10:51: error: no matching function for call to ‘ofXml::getValue(const char [7])’
         string server = settings.getValue("server");
                                                   ^
In file included from /home/marc/of/nightly/libs/openFrameworks/ofMain.h:22:0,
                 from /home/marc/of/nightly/addons/ofxXMPP/example/src/testApp.h:3,
                 from /home/marc/of/nightly/addons/ofxXMPP/example/src/testApp.cpp:1:
/home/marc/of/nightly/libs/openFrameworks/utils/ofXml.h:166:4: note: candidate: template<class T> T ofXml::getValue() const
  T getValue() const{
    ^~~~~~~~
/home/marc/of/nightly/libs/openFrameworks/utils/ofXml.h:166:4: note:   template argument deduction/substitution failed:
/home/marc/of/nightly/addons/ofxXMPP/example/src/testApp.cpp:10:51: note:   candidate expects 0 arguments, 1 provided
         string server = settings.getValue("server");
                                                   ^
In file included from /home/marc/of/nightly/libs/openFrameworks/ofMain.h:22:0,
                 from /home/marc/of/nightly/addons/ofxXMPP/example/src/testApp.h:3,
                 from /home/marc/of/nightly/addons/ofxXMPP/example/src/testApp.cpp:1:
/home/marc/of/nightly/libs/openFrameworks/utils/ofXml.h:170:14: note: candidate: std::__cxx11::string ofXml::getValue() const
  std::string getValue() const;

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