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unity3d通过串口接收Arduino数据 using System.Collections; using System.Collections.Generic; using UnityEngine; using System.IO.Ports; using System; using Syste 阅读全文
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SELECT w.company, COUNT(DISTINCT d.RFID_ID) AS total_unique_checkins -- 对每个公司,计算不同RFID_ID的打卡次数 FROM t_worker w JOIN t_rfid r ON w.signNum = r.num1 JOI 阅读全文
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python 逐行读取文本文件 # 打开文件 with open('myfile.txt', 'r') as file: # 逐行读取文件内容 for line in file: print(line, end='') # 注意,print 函数默认会在每行末尾添加换行符,所以这里使用 end='' 阅读全文
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public class CharCountExample { public static void main(String[] args) { String text = "Hello, world! How are you?"; char targetChar = 'o'; int count 阅读全文