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“虚拟”屏幕demo演示，一屏幕展示多屏内容，模拟切换屏幕 - App应用开发 -...
这样做的好处：大部分需要连接的组件（比如蓝牙客户端、MQTT、BluetoothLE、Wifi、Socket等）如果跨屏幕的话，都需要重新连接，自行管理连接状态，非常不便利，且大部分场景并不是真正的需要多个屏幕才能实现，多个屏幕切换...
App Inventor 2 “虚拟”屏幕：同一屏幕展示多屏内容，模拟切换屏幕 · App...
...拟分屏）
好处：大部分需要连接的组件（比如蓝牙客户端、MQTT、BluetoothLE、Wifi、Socket等）如果跨屏幕的话，都需要重新连接，自行管理连接状态，非常不便利，且大部分场景并不是真正的需要多个屏幕才能实现，多...
AppInventor写二进制文件 - App应用开发 - 清泛IT社区，为创新赋能！
...二进制文件：https://www.fun123.cn/reference/iot/bytearray.html
蓝牙等组件返回的字节列表（list），目前不能直接追加到拓展中，可以采用遍历字节列表，然后将字节逐一将追加到拓展中，最后调用拓展方法保存为二进制文件。
How do I turn off Oracle password expiration?
... Jul 21 '11 at 13:47
Pedro CarriçoPedro Carriço
3,60822 gold badges1313 silver badges1111 bronze badges
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How do I request a file but not save it with Wget? [closed]
...an 24 '19 at 20:53
Salathiel Genèse
1,2731717 silver badges2424 bronze badges
answered Mar 13 '12 at 20:21
Ma...
Is it safe to push_back an element from the same vector?
...ered Sep 13 '13 at 14:51
Johan RådeJohan Råde
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Remove all special characters from a string in R?
...hich will remove accents, but will keep the letters.
astr <- "Ábcdêãçoàúü"
iconv(astr, from = 'UTF-8', to = 'ASCII//TRANSLIT')
which results in
[1] "Abcdeacoauu"
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Regex to match a digit two or four times
...e -- but apparently the asker didn't...).
– Jean-François Corbett
Apr 30 at 11:24
2
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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...jp/cgi-bin/scat.rb/ruby/ruby-talk/380637
– Matt Briançon
Aug 16 '11 at 16:17
4
Correct explanati...
Resolve promises one after another (i.e. in sequence)?
Consider the following code that reads an array of files in a serial/sequential manner. readFiles returns a promise, which is resolved only once all files have been read in sequence.
...