Jeff Garland
Loïc Joly wrote:
Jeff Garland a écrit :
Oliver is correct -- serialization does not require default constructors for the types. It does require a constructed object prior to reading in the data.
Yes, you are right. My mistake.
What I meant is that for deserialisation, you still have a two phases construction: First, build your object with any mean available (if your object have only constructors with non-default parameters, this will probably imply building them with dummy parameters), then, in a second phase, override the member values by the serialized version.
Yep.
Nope. Sorry to be blunt, but I just want to make absolutely sure this isn't missed: http://boost.org/libs/serialization/doc/serialization.html#constructors: template<class Archive> inline void load_construct_data( Archive & ar, my_class * t, const unsigned int file_version ){ // retrieve data from archive required to construct new instance int m; ar >> m; // invoke inplace constructor to initialize instance of my_class ::new(t)my_class(m); } One phase construction. -- Dave Abrahams Boost Consulting www.boost-consulting.com