ExceptionConstructor mixin template

gistfile1.d

mixin template ExceptionConstructor()
{
	@safe pure nothrow
	this(string msg, string file = __FILE__, size_t line = __LINE__, Throwable next = null)
	{
		super(msg, file, line, next);
	}
}

mixin template ExceptionConstructor(string defaultMessage)
{
	@safe pure nothrow
	this(string msg = defaultMessage, string file = __FILE__, size_t line = __LINE__, Throwable next = null)
	{
		super(msg, file, line, next);
	}
}

class MyException : Exception
{
	mixin ExceptionConstructor!();
}