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What's the proper value for a checked attribute of an HTML checkbox?
... or "" (empty string) or empty
Specifies that the element represents a selected control.---'
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LEGO EV3 机器人传感器面板 · App Inventor 2 中文网
...ListPicker1.AfterPicking 时
调用 BluetoothClient1.Connect(ListPicker1.Selection)
如果 BluetoothClient1.IsConnected 那么
设置 Clock1.TimerEnabled 为 true
设置 Screen1.Title 为 "Connected"
步骤2：传感器轮询
Clock.Timer 事件每 200ms 触发...
How to install the JDK on Ubuntu Linux
...8-installer . If you have multiple java installed on your system, you can select with : sudo update-alternatives --config java
– Guagua
Jun 13 '14 at 22:27
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Real world use cases of bitwise operators [closed]
...ut a second time will undo the first. Older GUIs used to rely on this for selection highlighting and other overlays, in order to eliminate the need for costly redraws. They're still useful in slow graphics protocols (i.e. remote desktop).
Those were just the first few examples I came up with - t...
How do I tidy up an HTML file's indentation in VI?
...her move the cursor to the top of the file and indent to the end: gg =G
Or select the desired text to indent and hit = to indent it.
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How to link a folder with an existing Heroku app
... switch to the "deploy" tab and choose the deployment method "Heroku git" (selected by default). Then, you'll get instructions on how to connect an existing folder/git with Heroku.
– handy
Apr 13 at 8:30
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Use of alloc init instead of new
...s here: http://macresearch.org/difference-between-alloc-init-and-new
Some selected ones are:
new doesn't support custom initializers (like initWithString)
alloc-init is more explicit than new
General opinion seems to be that you should use whatever you're comfortable with.
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What APIs are used to draw over other apps (like Facebook's Chat Heads)?
... like UI animation.
A good overview of the detail, including allowing for selective interaction consumption, can be found in this StackOverflow thread. In particular one of the answer links will eventually take you here, which is a good example project. Note that ICS changed how this works a little...
How to execute a MySQL command from a shell script?
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mysql -h <host> -u<user> -p<password> database -e \
"SELECT * FROM blah WHERE foo='bar';"
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Undo git update-index --assume-unchanged
...will print all files with their status
grep '^[a-z]' will filter files and select only assume unchanged
cut -c 3- will remove status and leave only paths, cutting from the 3-rd character to the end
tr '\012' '\000' will replace end of line character (\012) to zero character (\000)
xargs -0 git updat...