解释代码

本文关键字:代码 解释 | 更新日期: 2023-09-27 17:57:32

嗨,有人能解释这些代码行吗?我需要了解它是如何工作的,以便继续我正在做的

if (e.Error == null){
    Stream responseStream = e.Result;
    StreamReader responseReader = new StreamReader(responseStream);
    string response = responseReader.ReadToEnd();
    string[] split1 = Regex.Split(response, "},{");
    List<string> pri1 = new List<string>(split1);
    pri1.RemoveAt(0);
    string last = pri1[pri1.Count() - 1];
    pri1.Remove(last);
}

解释代码

// Check if there was no error
    if (e.Error == null)
    {
// Streams are a way to read/write information from/to somewhere
// without having to manage buffer allocation and such
        Stream responseStream = e.Result;
// StreamReader is a class making it easier to read from a stream
        StreamReader responseReader = new StreamReader(responseStream);
// read everything that was written to a stream and convert it to a string using
// the character encoding that was specified for the stream/reader.
        string response = responseReader.ReadToEnd();
// create an array of the string by using "},{" as delimiter
// string.Split would be more efficient and more straightforward.
        string[] split1 = Regex.Split(response, "},{");
// create a list of the array. Lists makes it easier to work with arrays
// since you do not have to move elements manually or take care of allocations
        List<string> pri1 = new List<string>(split1);
        pri1.RemoveAt(0);
// get the last item in the array. It would be more efficient to use .Length instead
// of Count()
        string last = pri1[pri1.Count() - 1];
// remove the last item
        pri1.Remove(last);
     }

如果唯一要做的就是删除第一个和最后一个元素,那么我会使用LinkedList而不是List

它将响应流作为字符串读取,假设字符串由逗号分隔的序列"{…}"组成,例如:

{X} ,{Y},{Z}

然后在"},{"上拆分字符串,得到的数组

{X

Y

Z}

然后从数组的第一个元素({X=>X)中移除第一个支架,并从数组的最后一个元素(Z}=>Z)中移除末端支架。

据我所见,它是从一个可能来自TCP的流中读取的。它读取整个数据块,然后使用分隔符},{分离数据块。

因此,如果您有类似abc},{dec的东西,它将被放入具有2个值的split1数组中,split1[0]=abc,split1[1]=dec。

之后,它基本上删除了第一个和最后一个内容

它正在处理一个错误输出。它接收到来自e的流(我想这是一个例外),读取它。它看起来像:"{DDD},{I failed},}Because},{没有信号}{ENDCODE}它将其拆分为不同的字符串,并删除第一个和最后一个条目(DDD、ENDCODE)