added a char* cast at line 95 and solve compilation error

ValerioMagnago · lava · commit ce69854b039d · 2017-08-14T09:40:49.000+02:00
diff --git a/matplotlibcpp.h b/matplotlibcpp.h
@@ -92,7 +92,7 @@ namespace matplotlibcpp {
 				// matplotlib.use() must be called *before* pylab, matplotlib.pyplot,
 				// or matplotlib.backends is imported for the first time
 				if (!s_backend.empty()) {
-					PyObject_CallMethod(matplotlib, "use", "s", s_backend.c_str());
+					PyObject_CallMethod(matplotlib, const_cast<char*>("use"), const_cast<char*>("s"), s_backend.c_str());
 				}
 
 				PyObject* pymod = PyImport_Import(pyplotname);

Original file line number	Diff line number	Diff line change
`@@ -92,7 +92,7 @@ namespace matplotlibcpp {`
`92`	`92`	`// matplotlib.use() must be called before pylab, matplotlib.pyplot,`
`93`	`93`	`// or matplotlib.backends is imported for the first time`
`94`	`94`	`if (!s_backend.empty()) {`
`95`		`- PyObject_CallMethod(matplotlib, "use", "s", s_backend.c_str());`
	`95`	`+ PyObject_CallMethod(matplotlib, const_cast<char>("use"), const_cast<char>("s"), s_backend.c_str());`
`96`	`96`	`}`
`97`	`97`
`98`	`98`	`PyObject* pymod = PyImport_Import(pyplotname);`