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How to do multiple line editing?
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On OS X, the key combination for multi-line edits in Eclipse (or STS) is option/alt+command+A
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LEGO EV3 机器人按键控制 · App Inventor 2 中文网
...人按键控制
项目概述
这是一个基于MIT App Inventor开发的LEGO EV3机器人控制应用。通过蓝牙连接手机与EV3机器人，使用界面上的方向按键和滑块来控制机器人的移动和电机功率。
项目作者：CAVEDU Educat...
No module named pkg_resources
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July 2018 Update
Most people should now use pip install setuptools (possibly with sudo).
Some may need to (re)install the python-setuptools package via their package manager (apt-get install, yum install, etc.).
This issue can be highly depe...
How do I change permissions for a folder and all of its subfolders and files in one step in Linux?
...manual page and is a linux command that shows the man page for a command (most linux commands have a man page). try man ls or man man.
– Steve Robillard
Sep 18 '10 at 2:53
8
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How can I calculate the difference between two dates?
...e number of seconds between two NSDate objects will always be time-zone-agnostic.
Furthermore, this documentation specifies that Cocoa's implementation of time does not account for leap seconds, so if you require such accuracy, you will need to roll your own implementation.
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Programmatically get own phone number in iOS
...r using it. Here's the response from Apple:
"For security reasons, iPhone OS restricts an application (including its preferences and data) to a unique location in the file system. This restriction is part of the security feature known as the application's "sandbox." The sandbox is a set of fine-gra...
Remote debugging Tomcat with Eclipse
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This is for those in Windows OS: set JPDA_OPTS=-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n catalina.bat jpda start
– Lee Chee Kiam
Sep 26 '13 at 9:44
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How to hide first section header in UITableView (grouped style)
...e design of table views using the grouped style changed considerably with iOS 7, I would like to hide (or remove) the first section header. So far I haven't managed to achieve it.
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MySQL Server has gone away when importing large sql file
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As stated here:
Two most common reasons (and fixes) for the MySQL server has gone away
(error 2006) are:
Server timed out and closed the connection. How to fix:
check that wait_timeout variable in your mysqld’s my.cnf configurat...
Redis connection to 127.0.0.1:6379 failed - connect ECONNREFUSED
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some configuration will new root permission
Also listed manuals for other OS
Thanks
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