Optimization ???

[Mattdef]

Hi

Why this code is 2 times longer in D then C# ?



module hello;

import std.stdio;
import std.datetime;
import std.string;
import std.conv;

int main(string[] argv)
{
     writeln("Tape \"Y\" to launch benchmark or any other touch to 
exit program :");
	string s = chomp(readln());

	while(s == "y" || s == "Y")
	{
		auto bench = benchmark!(Benchmark)(1);
		writefln("Execution time : %s ms", bench[0].msecs);

		s = chomp(readln());
	}

     return 0;
}

void Benchmark()
{
	uint count = 0;
	student michael = null;

	while (count < 1_000_000)
	{
		michael = new student("Michael", Date(1998, 5, 1), 12);
		michael.setName("Joseph" ~ to!string(count));
		count++;
	}
	writeln(michael.getState());
}

class student
{
	private:
	string _name;
	Date _birthday;
	int _evaluation;

	public:
	string getState()
	{
		return _name ~ "'s birthday " ~ _birthday.toSimpleString() ~ " 
and his evaluation is " ~ to!string(_evaluation);
	}

	this(string name, Date birthday, int eval)
	{
		_name = name;
		_birthday = birthday;
		_evaluation = eval;
	}

	void setName(string name)
	{
		_name = name;
	}

	void setBirthday(Date birthday)
	{
		_birthday = birthday;
	}

	void setEvaluation(int eval)
	{
		_evaluation = eval;
	}
}