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AI2 如何快捷比较两个列表的差异项,然后再根据差异的项去执行更新操作? -...

...决思路: 这时,我们就会考虑使用字典来解决这个性能问题了,回顾一下文档中字典的特点: https://www.fun123.cn/reference/blocks/dictionaries.html Q:App Inventor 2 什么情况下需要使用字典?A:列表能完成字典的绝大部分功能,不过字典...
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BLE UUID是对的但连接闪退:java.lang.IllegalArgumentException: UUID str...

...attAttributes.java:33) ... 10 more ---------------- 经过调查,问题出在如下报错中的“uuid string too large”上,java内置的UUID中的函数。 通过调查发现是由于ble拓展编译平台(java8),和目前appinventor with sdk34 平台(java11) 对这个函数...
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Service and Characteristic are not published by the connected device -...

Service and Characteristic are not published by the connected device,报错如下: 问题原因:硬件/蓝牙芯片问题导致的,比如A硬件测试好的,换了B硬件没有修改uuid,就出现这个报错。 由于B硬件没有发布这些特征,就会报这个错误。
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Appinventor 音效调用播放后没有声音? - App应用开发 - 清泛IT社区,为创新赋能!

...发现调用播放后,又调用了停止方法,导致的声音不播放问题,去掉即可。 当然如果因为音频文件损坏等原因,也可能无法正常播放,这时可以先去资源区,点击隐私文件,菜单中选择预览,可以预览播放,事先检查好确保...
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PHP Error handling: die() Vs trigger_error() Vs throw Exception

In regards to Error handling in PHP -- As far I know there are 3 styles: 2 Answers 2 ...
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json_encode is returning NULL?

... mysql_set_charset is better for the security reason since PHP 5.2.3. See php.net/manual/en/function.mysql-set-charset.php for the details. – masakielastic Jun 3 '13 at 4:07 ...
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科大讯飞徐景明:从语音交互到人工智能 - 资讯 - 清泛网 - 专注C/C++及内核技术

...的填空题、问答题、作文等主观题,由机器改卷都将不成问题。 这两年,中国经济进入“新常态”,科大讯飞的增速不但没有降低,反而实现逆势的高速增长。2015年前三季度,科大讯飞的营业收入达16.7亿元,同比增长51.5%;净...
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Get JSON object from URL

...//paragonie.com/blog/2017/10/certainty-automated-cacert-pem-management-for-php-software // in most cases, you should set it to true curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_URL, 'url_here'); $result = curl_exec($ch); cu...
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PHP cURL vs file_get_contents

... @velop: Yes. And method, too. And redirects. And timeout... php.net/manual/en/context.http.php – Sz. Mar 28 '18 at 19:54 ...
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When to use self over $this?

In PHP 5, what is the difference between using self and $this ? 23 Answers 23 ...