大约有 3,000 项符合查询结果(耗时:0.0144秒) [XML]

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怎么从MQTT Topic接收的信息中解析出,然后查找想用的键值,让键值中的数据...

...收的信息 解析成JSON 然后查找对应的键值 将数据显示到文本上https://bbs.tsingfun.com/thread-1813-1-1.html 把json换成你的topic就行了。 遇到问题的话,每一步的变量都打印出来看看,找到哪一步的问题。 谢谢谢谢分享灰常不错
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怎么串口读取的文本数据,不能转成数字类型呢? - App应用开发 - 清泛IT社...

怎么串口读取的文本数据,不能转成数字类型呢?file:///E:/Users/QHW/Desktop/63e61567c7b4ea71b198d7eb1d6af9c.png
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Web客户端“接收文本”时会显示那样的内容而不是返回值? - App Inventor 2...

为什么我按教程写的这个代码[url=]求助.PNG[/url],在接受文本时会显示那样的内容而不是返回值啊[url=]求助1.PNG[/url]
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如何在文本输入框中自动加入空格 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

如何在文本输入框中自动加入空格?已回复。 Q:输入的十六进制,每2个字符对应一个十六进制数,想显示的时候自动加上空格 A:这个只能加逻辑,遍历十六进制,每2位 然后拼接一个空格。
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App Inventor 输入文本如何转成ASCII码? - App Inventor 2 中文网 - 清泛I...

Q:App Inventor 输入文本如何转成ASCII码? A:使用AsciiConversion 拓展可以轻松实现。 AsciiCode: 给出字符,返回它相应的 Ascii码。 用法示例:返回字符“A”的Ascii码,结果将是:65。
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Write text files without Byte Order Mark (BOM)?

I am trying to create a text file using VB.Net with UTF8 encoding, without BOM. Can anybody help me, how to do this? I can write file with UTF8 encoding but, how to remove Byte Order Mark from it? ...
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#1071 - Specified key was too long; max key length is 767 bytes

... be aware that if you set an index on a big char or varchar field which is utf8mb4 encoded, you have to divide the max index prefix length of 767 bytes (or 3072 bytes) by 4 resulting in 191. This is because the maximum length of a utf8mb4 character is four bytes. For a utf8 character it would be thr...
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MySQL “incorrect string value” error when save unicode string in Django

...s you need to: Change your MySQL database, table and columns to use the utf8mb4 character set (only available from MySQL 5.5 onwards) Specify the charset in your Django settings file as below: settings.py DATABASES = { 'default': { 'ENGINE':'django.db.backends.mysql', ... ...
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How to change the default charset of a MySQL table?

...So query will be: ALTER TABLE etape_prospection CONVERT TO CHARACTER SET utf8; share | improve this answer | follow | ...
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windows C++ gbk转为utf-8 - C/C++ - 清泛网 - 专注C/C++及内核技术

...码不同,所以需要将windows下的中文编码转换为linux使用的utf8格式的,否则会出现乱码。 //m_string是windows下的中文字符串 //utf8_string是返回转换为utf8编码的中文字符串 //slen是utf8_string字符数组的大小 int multichar_2_utf8(const char *m_s...