当我构建我的项目时,VC# 说不允许使用默认参数说明符。它把我带到了这段代码:
public class TwitterResponse
{
private readonly RestResponseBase _response;
private readonly Exception _exception;
internal TwitterResponse(RestResponseBase response, Exception exception = null)
{
_exception = exception;
_response = response;
}
我的错误可能是什么?