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micro:bit 微控制器教程 · App Inventor 2 中文网
...理温度数据
when BluetoothLE1.TemperatureReceived temperature
do
set Label_Temperature.Text to "温度: " & temperature & "°C"
3. 双向通信
实现手机与 micro:bit 的双向数据交换：
// micro:bit 端发送状态到手机
// 手机端处理自定义数...
How can I remove the extension of a filename in a shell script?
What's wrong with the following code?
12 Answers
12
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What are the most common non-BMP Unicode characters in actual use? [closed]
..., ranges outside the BMP (Basic Multilingual Plane) are the most common so far? These are the ones which require 4 bytes in UTF-8 or surrogates in UTF-16.
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How do I assign an alias to a function name in C++?
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Excellent, how about C++98? I have a class w/2 "reset" overloads used to set & reset. Internally, no problem. For external users I wanted to alias as "set" so it's intuitive for context (set a default-constructed, clear()'d etc.; reset working object). Class methods: (1...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...ere is another case: ${var:?}, which will provide error when variable is unset or not set. REF: github.com/koalaman/shellcheck/wiki/SC2154
– Nam Nguyen
Apr 7 '15 at 4:32
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SVN command to delete all locally missing files
...outputs of the following commands to svn rm for all missing files. You can set the current working directory to the appropriate directory or subdirectory before running these - dependent on whether you want to run this your entire working copy, or only a subset.
Run an svn status
Search for lines ...
Is there a function in python to split a word into a list? [duplicate]
Is there a function in python to split a word into a list of single letters? e.g:
7 Answers
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How can I load an object into a variable name that I specify from an R data file?
When you save a variable in an R data file using save , it is saved under whatever name it had in the session that saved it. When I later go to load it from another session, it is loaded with the same name, which the loading script cannot possibly know. This name could overwrite an existing variabl...
How to grep (search) committed code in the Git history
... at all. My command is > git log -p --all -S 'public string DOB { get; set; } = string.Empty;' and every time I try to run it I get > fatal: ambiguous argument 'string': unknown revision or path not in the working tree. > Use '--' to separate paths from revisions, like this: > 'git &l...
How to get the start time of a long-running Linux process?
Is it possible to get the start time of an old running process? It seems that ps will report the date (not the time) if it wasn't started today, and only the year if it wasn't started this year. Is the precision lost forever for old processes?
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