Mark single argument ctors of IoData explicit

- Bind && to local object in ctor

Author: phdum-a

palace/utils/iodata.cpp

@@ -150,8 +150,9 @@ std::stringstream PreprocessFile(const char *filename)
 
 using json = nlohmann::json;
 
-IoData::IoData(nlohmann::json &&config) : units(1.0, 1.0), init(false)
+IoData::IoData(nlohmann::json &&config_) : units(1.0, 1.0), init(false)
 {
+  auto config = std::move(config_);
   // Set up configuration option data structures.
   problem.SetUp(config);
   model.SetUp(config);

palace/utils/iodata.hpp

@@ -43,10 +43,10 @@ class IoData
   void CheckConfiguration();
 
 public:
-  IoData(const Units &units) : units(units), init(false) {}
+  explicit IoData(const Units &units) : units(units), init(false) {}
 
   // Take parsed json and override options defaults.
-  IoData(nlohmann::json &&config);
+  explicit IoData(nlohmann::json &&config);
 
   // Parse command line arguments and override options defaults.
   IoData(const char *filename, bool print);