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一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
1.概述
* MTU: 最大传输单元（MAXIMUM TRANSMISSION UNIT） ， 指在一个PDU （Protocol Data Unit： 协议数据单元，在一个传输单元中的有效传输数据）能够传输的最大数据量（多少字节可以一次性传输到对方）。
* MTU 交...
Looping through array and removing items, without breaking for loop
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15 Answers
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Ruby Hash to array of values
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answered Mar 5 '12 at 0:48
Ray ToalRay Toal
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overlay two images in android to set an imageview
...mage, or you can configure a LayerDrawable dynamically in code.
Solution #1 (via XML):
Create a new Drawable XML file, let's call it layer.xml:
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/t" />
<item android:draw...
How to fix Array indexOf() in JavaScript for Internet Explorer browsers
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10 Answers
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Why is the shovel operator (
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Proof:
a = 'foo'
a.object_id #=> 2154889340
a << 'bar'
a.object_id #=> 2154889340
a += 'quux'
a.object_id #=> 2154742560
So << alters the original string rather than creating a new one. The reason for this is that in ruby a += b is syntact...
How to initialize all members of an array to the same value in Swift?
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170
Actually, it's quite simple with Swift. As mentioned in the Apple's doc, you can initialize an...
how to use “AND”, “OR” for RewriteCond on Apache?
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120
This is an interesting question and since it isn't explained very explicitly in the documentat...
fork() branches more than expected?
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answered Jun 21 '12 at 6:58
wallykwallyk
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Getting a map() to return a list in Python 3.x
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TriptychTriptych
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