大约有 3,000 项符合查询结果(耗时:0.0118秒) [XML]

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APP Inventor 空字符串怎么表示? - App应用开发 - 清泛IT社区,为创新赋能!

Q:APP Inventor 空字符串怎么表示? A:文本下的字符串,不填写任何内容,就是空字符串。 详见文档:https://www.fun123.cn/reference/blocks/text.html#string
https://bbs.tsingfun.com/thread-3106-1-1.html 

模拟器一直出错,怎么回事? - App Inventor 2 离线版 - 清泛IT社区,为创新赋能!

模拟器一直出错,怎么回事?重试了很多次。你好,请提供一下出错截图或出错信息,谢谢
https://bbs.tsingfun.com/thread-3181-1-1.html 

App 里记的数据,怎么变成一张表格发到微信?App Inventor 不装拓展就能做 ...

...和鸿蒙都能用,积木原样不改。完整的分步实验(每一步怎么验证、带日期文件名、导入)已经整理进文档:fun123.cn 文件管理器积木参考,站内搜「CSV 文件分享」也能找到。好了,是不是很简单,今天的分享就到此结束,咱们...
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How to convert floats to human-readable fractions?

...ng for. Its based on the theory of continued fractions and very fast and fairly compact. I have used versions of this customized for specific numerator and denominator limits. /* ** find rational approximation to given real number ** David Eppstein / UC Irvine / 8 Aug 1993 ** ** With corrections ...
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Parsing command-line arguments in C?

...care of stuff like, for example: -?, --help for help message, including email address -V, --version for version information --usage for usage message Doing it yourself, which I don't recommend for programs that would be given to somebody else, as there is too much that could go wrong or lower qual...
https://www.tsingfun.com/ilife/tech/988.html 

抱腾讯大腿联姻知乎 搜狗不止要抄底百度 - 资讯 - 清泛网 - 专注C/C++及内核技术

...的PC时代,无论是搜索引擎或者其他一些信息工具,都是连接人与信息,而无线移动时代、共享经济时代,搜索更具“人性”。具体表现在以下三个方面:1,伴随着网页形态的变化,用户的需求也在改变,即用户需要更精准地去...
https://bbs.tsingfun.com/thread-585-1-1.html 

Sql server默认的端口是多少?如何开启远程连接? - 爬虫/数据库 - 清泛IT...

默认是1433,可以在配置管理器中查看: 需要开放1433端口,可以参考《Windows、Linux开放指定端口》。 另外,开启远程连接还需要启用TCP/IP,然后重启服务,步骤如下:
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1、如果自定义错误提示?2、网络接口连接错误导致程序经常有卡死的现象如何...

...提示从对话框中输出?我想自定义提示内容。另外,网络连接不上时,程序会经常有卡死的现象,请问如何解决?第一个问题请参考:https://bbs.tsingfun.com/thread-1730-1-1.html 第二个问题请参考:https://bbs.tsingfun.com/thread-1810-1-1.html
https://bbs.tsingfun.com/thread-1892-1-1.html 

mqtt协议加密连接,仅ca证书如何配置? - App Inventor 2 中文网 - 清泛IT...

mqtt协议加密连接,仅ca证书如何配置?
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BLE UUID是对的但连接闪退:java.lang.IllegalArgumentException: UUID str...

请问UUID是对的 连接闪退, 下面是报错日志 java.lang.ExceptionInInitializerError at edu.mit.appinventor.ble.BluetoothLEint$BLEReadOperation.subscribe(BluetoothLEint.java:357) at edu.mit.appinventor.ble.BluetoothLEint$BLEReadOperation.run(BluetoothLEint.java:325) at android.os....