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AppInventor2如何通过socket给网络发16进制的数据？ - App Inventor 2 中文...
...，可以赐教吗？软件只能发ASCLL码？没办法收发HEX，蓝牙组件的有写字节功能，TCP网络组件没有。答：发送文本消息时，hexaStringMode 问：app inventor的给网络发16进制指令的方法，可以赐教吗？软件只能发ASCLL码？没办法收发HEX，...
App Inventor 2 如何比较两个日期/时间？ - App Inventor 2 中文网 - 清泛...
App Inventor 2 如何比较两个日期/时间？利用计时器组件的相关方法：比较两个日期/时间对象的毫秒数，具体请参见文档：https://www.fun123.cn/reference/ ... tml#Clock.GetMillis即时时间的获取方法：1、日期/时间选择...利用计时器组件的相关...
按键可见性的延时设置 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...的2号按键的可见性从原来的假 恢复成真
用“计时器”组件，上面代码就是定时1小时，1小时后，下面的事件就会被触发执行，在里面把按钮的可见性设置为“真”即可。
手机APP上面有好几组按键 控制定时时间， 每按下一...
AppInventor2如何实现播放视频并在上面显示两行文本字幕？ - App应用开发 -...
...在上面显示两行文本字幕？
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原生的视频播放器组件并无字幕功能，也不能和布局组件进行组合布局，实现不了文本叠加显示的效果。
只能使用视频播放拓展实现：https://bbs.tsingfun.com/thread-1719-1-1.html
拓展初始化在一...
Extracting extension from filename in Python
Is there a function to extract the extension from a filename?
24 Answers
24
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Sum a list of numbers in Python
... sum(i for i in a) is just redundant.
– Jean-François Fabre♦
Apr 18 '18 at 13:37
7
sum(Dec...
How can I remove non-ASCII characters but leave periods and spaces using Python?
...ignore all symbols that are not supported. For example, the Swedish letter å is not an ASCII character:
>>>s = u'Good bye in Swedish is Hej d\xe5'
>>>s = s.encode('ascii',errors='ignore')
>>>print s
Good bye in Swedish is Hej d
Edit:
Python3: str ->...
When should I create a destructor?
...ed Feb 4 '11 at 13:58
Øyvind BråthenØyvind Bråthen
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How do I sort unicode strings alphabetically in Python?
Python sorts by byte value by default, which means é comes after z and other equally funny things. What is the best way to sort alphabetically in Python?
...
What is the _snowman param in Ruby on Rails 3 forms for?
...rs that can be understood as both Latin-1 and Unicode (for instance, é or ç, common in names), Internet Explorer will encode them in Latin-1.
This means that if a user searches for "Ché Guevara", it will come through incorrectly on the server-side. In Ruby 1.9, this will result in an encoding er...