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文本框输入十六进制，按字节通过蓝牙发送 · App Inventor 2 中文网
...制组件的十六进制转字节：把文本 "ABCD" 转成字节列表 [171, 205]（也就是 AB CD）；
蓝牙客户端的发送字节数组：把字节列表原样发出去。
为什么现在发出去的是四个字节？「发送文本」发的是文字本身，每个字母按 ASCII 编码...
Output data from all columns in a dataframe in pandas [duplicate]
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answered Jul 6 '12 at 12:18
eumiroeumiro
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JavaScript function to add X months to a date
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18 Answers
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What's the difference between “version number” in iTunes Connect, “bundle version”, “bundle version
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143
Yes, they are related. They all refer to the version of your application.
iTunes Connect
Thi...
FFmpeg: How to split video efficiently?
... -y -i input.ts -vcodec copy -acodec copy -ss 00:00:00 -t 00:30:00 -sn test1.mkv
time ffmpeg -v quiet -y -i input.ts -vcodec copy -acodec copy -ss 00:30:00 -t 01:00:00 -sn test2.mkv
echo "One command"
time ffmpeg -v quiet -y -i input.ts -vcodec copy -acodec copy -ss 00:00:00 -t 00:30:00 \
-sn tes...
Apply multiple functions to multiple groupby columns
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313
The second half of the currently accepted answer is outdated and has two deprecations. First an...
Is there a way to list pip dependencies/requirements?
... so I am providing an updated answer.
This was tested with pip versions 8.1.2, 9.0.1, 10.0.1, and 18.1.
To get the output without cluttering your current directory on Linux use
pip download [package] -d /tmp --no-binary :all: -v
-d tells pip the directory that download should put files in.
Bet...
How do I get bit-by-bit data from an integer value in C?
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155
If you want the k-th bit of n, then do
(n & ( 1 << k )) >> k
Here we creat...