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How to deal with floating point number precision in JavaScript?
...bers like 1/10 without realizing that they wouldn't even blink at the same error if it occurred with 1/3.
If the first point really applies to you, use BigDecimal for JavaScript, which is not elegant at all, but actually solves the problem rather than providing an imperfect workaround.
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How to resize a VirtualBox vmdk file
...ualbox settings).
P.S. If your new size is too small, you'll get the same error even with your new vdi file.
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Print a string as hex bytes?
... the correct format should be {:02x}:
>>> s = "Hello unicode \u0005 !!"
>>> ":".join("{0:x}".format(ord(c)) for c in s)
'48:65:6c:6c:6f:20:75:6e:69:63:6f:64:65:20:5:20:21:21'
^
>>> ":".join("{:02x}".format(ord(c)) for c in s)
'4...
How do I check if there are duplicates in a flat list?
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It throws me an "invalid syntax" error on the lambda function of decompose()
– raffaem
May 13 '19 at 10:43
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Logstash实践: 分布式系统的日志监控 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Redis接收日志,写入到本地文件。
Broker:日志Hub,用来连接多个Shipper和多个Indexer。
无论是Shipper还是Indexer,Logstash始终只做前面提到的3件事:
Shipper从日志文件读取最新的行文本,经过处理(这里我们会改写部分元数据)...
Convert tuple to list and back
...st block to convert the tuple t to a list by passing t to list(), I get an error message: "*** Error in argument: '(t)'" This seems to happen to me only while debugging. Still confused.
– Jimmy
Aug 28 '18 at 19:30
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App Inventor 2 其他参考资料 · App Inventor 2 中文网
...及Firebase组件简介
使用App Inventor控制物联网设备/低功耗蓝牙设备(BLE)
传感器
使用位置传感器
将App Inventor项目连接到外部传感器
将Genymotion模拟器与App Inventor一起使用
使用虚拟现实和App Inventor进行实验
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App Inventor 2 AsciiConversion 拓展,ASCII编码与解码,Ascii码转换 · App Inventor 2 中文网
...出 Ascii码列表,转换后返回相应的文本。
当您使用UART蓝牙接收数据时,此功能非常有用,因为UART接收到的数据是包含Ascii码的列表,必须将其转换为相应的文本。
用法示例1:
该块将在标签1 中写入文本:“A03”,这是 Asc...
BLE 模块 透传问题 - 创客硬件开发 - 清泛IT社区,为创新赋能!
问一下老师 1.这个蓝牙传输一次,是一个多字节包?还是单一个字节?
2.我想传文件,是否要先设变量读进数据?有哪位老师给讲一下。
根据 ble ...
二进制文件的读写 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!
...到的二进制文件?读到的二进制文件能否转成列表文件?蓝牙客户端或 ble 都可以接收二进制数组,返回的数据是列表:
如果想要保存二进制到文件,可以考虑转换成 ascii 或 base64 化,然后通过文件管理器保存为文件,具体...
