engine->RegisterObjectBehaviour("string", asBEHAVE_ASSIGNMENT, "string &f(int &in)", asFUNCTION(IntToString), asCALL_CDECL_OBJLAST);

string & IntToString(int &i)
{
	stringstream stream;
	stream << i;
	return stream.str();
}

string & IntToString(int &i)
{
	string * str = new string;

	stringstream stream;
	stream << i;
	*str = stream.str();
	return *str;
}

	string a = "a";
	string b = "b";
	string c = "c";

	string d = b + c = a;

string & IntToString(int &i, string &dest){	istringstream stream;	stream << i;	dest = stream.str();	return dest;}

#include <iostream>#include <string>#include <sstream>#include "stdstring.h"#include "utils.h"static asIScriptEngine * engine;std::string scriptCode ="int main()\n""{\n""	string test;\n""	test = \"Hello\";\n""	test = 3;\n""	test = \"Number:\" + 3;\n""	return 0;\n""}";std::string & AssignIntToString(int & i, std::string & dest){	std::ostringstream stream;	stream << i;	dest = stream.str(); //Assign to string	return dest;}std::string AddIntToString(std::string & dest, int & i){	std::ostringstream stream;	stream << i;	dest += stream.str(); //Add it onto string	return dest;}int LoadScript(){	// Give the code to the script engine	int r = engine->AddScriptSection(0, "Test", scriptCode.c_str(), scriptCode.size(), 0);	if (r < 0)	{		std::cout << "An error occured while adding the script section." << std::endl;		return r;	}	RegisterStdString(engine);	engine->RegisterObjectBehaviour("string", asBEHAVE_ASSIGNMENT, "string & f(int &in)", asFUNCTION(AssignIntToString), asCALL_CDECL_OBJLAST);	engine->RegisterGlobalBehaviour(asBEHAVE_ADD, "string f(string &in, int &in)", asFUNCTION(AddIntToString), asCALL_CDECL);	return 0;}int CompileScript(){	// Create an output stream that will receive information about the build	COutStream out;	int r = engine->Build(0, &out);	if (r < 0)	{		std::cout << "Failed to compile script." << std::endl;		return -1;	}	// If we wish to build again, the script sections has to be added again.	// Now we will verify the interface of the script functions we wish to call	const char * buffer = engine->GetFunctionDeclaration(engine->GetFunctionIDByName(0, "main"));	if( buffer == 0 )	{		std::cout << "Failed to retrieve declaration of function 'main'." << std::endl;		return -1;	}	return 0;}bool ExecuteScript(){	// Create a context in which the script will be executed. 	asIScriptContext * ctx;	int r = engine->CreateContext(&ctx);	if (r < 0)	{		std::cout << "Failed to create a context." << std::endl;		return true;	}	// Prepare the context for execution	r = ctx->Prepare(engine->GetFunctionIDByName(0, "main"));	if (r < 0)	{		std::cout << "Failed to prepare context." << std::endl;		return true;	}	// Execute script	r = ctx->Execute();	if (r < 0)	{		std::cout << "Unexpected error during script execution." << std::endl;		return true;	}	if (r == asEXECUTION_EXCEPTION)	{		std::cout << "An exception occured during execution." << std::endl;		// Print exception description		int funcID = ctx->GetExceptionFunction();		std::cout << "func: " << engine->GetFunctionName(funcID) << std::endl;		std::cout << "line: " << ctx->GetExceptionLineNumber() << std::endl;		std::cout << "desc: " << ctx->GetExceptionString() << std::endl;	}	ctx->Release();	return false;}int main(){	engine = asCreateScriptEngine(ANGELSCRIPT_VERSION);	if (LoadScript() < 0 )	    return -1;	CompileScript();	ExecuteScript();	engine->Release();	engine = NULL;	system("PAUSE");	return 0;}

string a = "a";a = 2;

string a = 1;

static string &AssignIntToString(int i, string &dest){	ostringstream stream;	stream << i;	dest = stream.str(); 	return dest;}static string &AddAssignIntToString(int i, string &dest){	ostringstream stream;	stream << i;	dest += stream.str(); 	return dest;}static string AddStringInt(string &str, int i){	ostringstream stream;	stream << i;	str += stream.str(); 	return str;}static string AddIntString(int i, string &str){	ostringstream stream;	stream << i;	return stream.str() + str;}// Automatic conversion from intr = engine->RegisterObjectBehaviour("string", asBEHAVE_ASSIGNMENT, "string &f(int)", asFUNCTION(AssignIntToString), asCALL_CDECL_OBJLAST); assert( r >= 0 );r = engine->RegisterObjectBehaviour("string", asBEHAVE_ADD_ASSIGN, "string &f(int)", asFUNCTION(AddAssignIntToString), asCALL_CDECL_OBJLAST); assert( r >= 0 );r = engine->RegisterGlobalBehaviour(asBEHAVE_ADD,         "string f(string &in, int)", asFUNCTION(AddStringInt), asCALL_CDECL); assert( r >= 0 );r = engine->RegisterGlobalBehaviour(asBEHAVE_ADD,         "string f(int, string &in)", asFUNCTION(AddIntString), asCALL_CDECL); assert( r >= 0 );

// correctRegisterObjectBehaviour("string", asBEHAVE_ASSIGNMENT, "string &f(int)", asFUNCTION(AssignIntToString)...// what I assumedRegisterObjectBehaviour("string", asBEHAVE_ASSIGNMENT, "string &f(int, string &)", asFUNCTION(AssignIntToString)