大约有 2,000 项符合查询结果(耗时:0.0084秒) [XML]

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App Inventor 2 蓝牙发送十六进制字节方案:文本转Hex字节详解 - App应用开...

...xt)  输入: hexText = "ABCD"  输出: 字节列表 [171, 205]    即 [0xAB, 0xCD]    清空字节列表  设置 i = 1  当 i < hexText的长度 时执行:    取高位字符 = hexText的子串(i, 1)   &nbsp...
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把数据保存成 CSV 文件并分享出去 · App Inventor 2 中文网

...四:文件名带上日期,附一句说明 实验五:把 CSV 读回列表 常见问题 平台说明 相关文档 « 返回首页 有用户问:App 里记了一堆数据(记账、打卡、测量值),想导出成一个 CSV 文件,再通过微信、QQ 或邮件发给别人,...
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App Inventor 2 字典 vs 列表:同样存数据,性能差了10倍? - App应用开发 ...

<font size="4"><b>App Inventor 2 字典 vs 列表:同样存数据,性能差了10倍?</b></font><br><br><br>在做 App 开发时,你可能会遇到这样一个场景:要存储一组学生信息,包含姓名、年龄、班级,然后需要快速根据姓名查到对应的班级。用列...
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App Inventor 2 浮点数与字节转换教程 · App Inventor 2 中文网

...de(value) if (Dictionary.Get(结果, "result") != "") { global 字节列表 = Dictionary.Get(结果, "result") 标签_字节.Text = join(字节列表) } } // 字节转浮点数 procedure 字节转浮点数(字节列表, 小端序) { global JSON = join("{\"cmd\":\"bytes2float\",\"bytes...
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App Inventor 2 字典(Dictionary)操作教程 - 键值对数据结构 · App Inventor 2 中文网

... 什么是字典(Dictionary) 字典 vs 列表 JSON与字典的关系 字典积木块概览 创建字典 方法一:create empty dictionary(创建空字典) 方法二:make a dictionary + pair(直接创建含数据的字典...
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How to ignore the first line of data when processing CSV data?

I am asking Python to print the minimum number from a column of CSV data, but the top row is the column number, and I don't want Python to take the top row into account. How can I make sure Python ignores the first line? ...
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Script to get the HTTP status code of a list of urls?

..._connect};%{size_download};%{speed_download}\n' &lt; url.lst | tee results.csv It just outputs a bunch of data into a csv file that can be imported into any office tool. share | improve this answe...
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Sanitizing strings to make them URL and filename safe?

...à' =&gt; 'a','á' =&gt; 'a','â' =&gt; 'a','ã' =&gt; 'a','ä' =&gt; 'a','å' =&gt; 'a','ç' =&gt; 'c','è' =&gt; 'e','é' =&gt; 'e','ê' =&gt; 'e','ë' =&gt; 'e','ì' =&gt; 'i','í' =&gt; 'i','î' =&gt; 'i','ï' =&gt; 'i','ñ' =&gt; 'n','ò' =&gt; 'o','ó' =&gt; 'o','ô' =&gt; 'o','õ' =&gt; 'o','...
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Case insensitive XPath contains() possible?

...ÇÅÏÕÑŒ', 'abcdefghijklmnopqrstuvwxyzäöüéèêàáâòóôùúûçåïõñœ'),'foo')]"); – Stefan Steiger Nov 29 '13 at 9:34 1 ...
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App Inventor 2 串口通信教程 - USB串口与蓝牙串口 · App Inventor 2 中文网

...: 蓝牙客户端1 是不可见组件,自动出现在组件列表中 2. BluetoothClient 关键属性 属性 说明 默认值 Secure 是否使用安全连接 true DelimiterByt...