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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
...；非AT开头是透传数据：
这里仅演示了需求硬件状态、MAC地址的指令，当然不同厂商会提供不同的AT指令，具体可查看厂商提供的硬件说明书。
BLE设备角色主要分为两种角色，主机（Master或Central）和从机（Peripheral），当主...
jQuery & CSS - Remove/Add display:none
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Me too @TrippinBill (using Mac Firefox 43) - have submitted an edit. These seem to be the only way to remove the CSS property rather than reverse it. This allows it to be overridden by broader CSS assignments, whereas reversing it doesn't.
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Thin web server: `start_tcp_server': no acceptor (RuntimeError) after git branch checkout
...inked article, a command to locate rails servers already running (works on mac): ps aux | grep rails
– Luke Griffiths
Aug 16 '12 at 14:40
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How to remove files and directories quickly via terminal (bash shell) [closed]
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On a Mac? Do this instead: brew install trash then trash -rf some_dir This will move the unwanted directory into your trashbin instead of just vanishing Prestige-style into the ether. (source)
– zakdances
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Configuring user and password with Git Bash
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If you are a Mac user and have keychain enabled, you to need to remove the authorization information that is stored in the keychain:
- Open up Keychain access
- Click "All items" under category in the left-hand column
- Search for git
- ...
select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...体数目可以cat /proc/sys/fs/file-max察看,一般来说这个数目和系统内存关系很大。
总结：
（1）select，poll实现需要自己不断轮询所有fd集合，直到设备就绪，期间可能要睡眠和唤醒多次交替。而epoll其实也需要调用epoll_wait不断轮询...
How to set the current working directory? [duplicate]
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It work for Mac also
import os
path="/Users/HOME/Desktop/Addl Work/TimeSeries-Done"
os.chdir(path)
To check working directory
os.getcwd()
share
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How to rotate portrait/landscape Android emulator? [duplicate]
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on mac: fn+control+F11 or fn+control+f12
– Fresheyeball
Jul 25 '12 at 23:58
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Code Wrap IntelliJ?
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In IntelliJ IDEA 2018.2 on mac, 'Use soft wraps' is under View -> Active Editor
– user674669
Jul 6 '18 at 19:18
add a commen...
Unable to Connect to GitHub.com For Cloning
...ed that my ~/.git_config was messed up. I removed all of them, disabled my Mac OSX Firewall and now everything works.
– fulvio
Apr 28 '16 at 4:33
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