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我帮儿子用App Inventor 2给遥控车装了"蓝牙大脑"，手机一划车就...
...接收并解析
2. 实时响应：方向盘操作不能有可见延迟
3. 连接稳定：不能玩着玩着就断连
4. 低成本：已有的遥控车不想大拆大改
蓝牙经典串口（SPP）方案最合适——硬件端用HC-05蓝牙模块（十几块钱），手机端用App Inventor 2...
Haskell, Lisp, and verbosity [closed]
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ShreevatsaRShreevatsaR
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What character to use to put an item at the end of an alphabetic list?
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13 Answers
13
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How do I use a compound drawable instead of a LinearLayout that contains an ImageView and a TextView
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answered Nov 29 '11 at 23:20
chiukichiuki
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How do I get the current time zone of MySQL?
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235
From the manual (section 9.6):
The current values of the global and client-specific time zo...
Why should I avoid using Properties in C#?
... Can anyone explain to me why I should or should not use properties?
In C# 3.0, with automatic properties, does this change?
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How do I determine the size of my array in C?
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1307
Executive summary:
int a[17];
size_t n = sizeof(a)/sizeof(a[0]);
Full answer:
To determi...
Can we add a inside H1 tag?
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Yes you can.
HTML4 has this to say:
<!ENTITY % heading "H1|H2|H3|H4|H5|H6">
<!--
There are six levels of headings from H1 (the most important)
to H6 (the least important).
-->
<!ELEMENT (%heading;) - - (%inline;)* -- heading -->
And %inline; is:
<!ENTITY % inli...
How to customize the background/border colors of a grouped table view cell?
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UPDATE: In iPhone OS 3.0 and later UITableViewCell now has a backgroundColor property that makes this really easy (especially in combination with the [UIColor colorWithPatternImage:] initializer). But I'll leave the 2.0 version of the answer here...
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edited Jun 27 '13 at 9:39
sakibmoon
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an...