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使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网

...这些连接以及设备发现和广告的规则由蓝牙通用访问配置文件 (GAP) 管理,这是所有 BLE 设备都必须遵守的强制性框架。 广播者与观察者 - 在这种情况下,嵌入在各种物联网设备中的传感器将定期向监听范围内的智能手机发送广...
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【基础入门班】【大作业】爱学习App - App Inventor 2 中文网 - 清泛IT社区...

...误的题目可以专门练习。 分数要存储分析 题目数据csv文件,导入 ------------------------------数据结构参考--------------------------- 练习模式: 英文,中文 hello,你好 ... 题目类型,题面,正确答案,干扰答案 选择题,1+1=?...
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正则表达式 30 分钟入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...记录文本规则的代码。 很可能你使用过Windows/Dos下用于文件查找的通配符(wildcard),也就是*和?。如果你想查找某个目录下的所有的Word文档的话,你会搜索*.doc。在这里,*会被解释成任意的字符串。和通配符类似,正则表达式也...
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OceanBase使用libeasy原理源码分析:服务器端 - 数据库(内核) - 清泛网 - ...

...始化其各个链表节点成员,比如conn_list(已建立连接但是读写事件还没有监听的连接链表), connected_list(连接已建立并且事件已监听的连接链表),request_list(已处理完成但是还没有将结果发送出去的请求链表)等 3.2 统计信息初...
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Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术

...>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ; Include 文件定义 ;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> include windows.inc include user32.inc includelib user32.lib include kernel32.inc includelib k...
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从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...的构造器,通过“策略模式”实现,算法的组合。 新建文件:org.conan.mymahout.recommendation.job.RecommendFactory.java public final class RecommendFactory { ... } 1). 构造数据模型 public static DataModel buildDataModel(String file) throws TasteException, ...
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Output array to CSV in Ruby

It's easy enough to read a CSV file into an array with Ruby but I can't find any good documentation on how to write an array into a CSV file. Can anyone tell me how to do this? ...
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How to add pandas data to an existing csv file?

I want to know if it is possible to use the pandas to_csv() function to add a dataframe to an existing csv file. The csv file has the same structure as the loaded data. ...
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How do I convert this list of dictionaries to a csv file?

... import csv toCSV = [{'name':'bob','age':25,'weight':200}, {'name':'jim','age':31,'weight':180}] keys = toCSV[0].keys() with open('people.csv', 'w', newline='') as output_file: dict_writer = csv.DictWriter(output_file, ...
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How to avoid Python/Pandas creating an index in a saved csv?

I am trying to save a csv to a folder after making some edits to the file. 6 Answers ...