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BLE（一）概述&工作流程&常见问题 - 创客硬件开发 - 清泛IT社区，...
...径交换配对信息，例如NFC等。例如一些NFC蓝牙音箱。
0x23 设备配对过程1 pin码配对在老的蓝牙2.0协议中，配对过程需要输入一个PIN码，长度可以从4到16个数字。（很多设备默认0000或者1234）
在配对的过程中通过PIN码来生成Linkkey...
Paste in insert mode?
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answered May 18 '10 at 23:35
daviddavid
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What are the differences between various threading synchronization options in C#?
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135
Great question. I maybe wrong.. Let me try.. Revision#2 of my orig answer.. with a little bit o...
MongoDB/Mongoose querying at a specific date?
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rdreyrdrey
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How to automatically generate N “distinct” colors?
...ss or saturation, you can distribute the hues like so:
// assumes hue [0, 360), saturation [0, 100), lightness [0, 100)
for(i = 0; i < 360; i += 360 / num_colors) {
HSLColor c;
c.hue = i;
c.saturation = 90 + randf() * 10;
c.lightness = 50 + randf() * 10;
addColor(c);
}
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How can you set class attributes from variable arguments (kwargs) in python
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answered Nov 18 '11 at 18:39
fqxpfqxp
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Why is MATLAB so fast in matrix multiplication?
...uple of times, and then:
>> tic, C = A * A; toc
Elapsed time is 0.075396 seconds.
>> tic, gC = gA * gA; toc
Elapsed time is 0.008621 seconds.
MATLAB uses highly optimized libraries for matrix multiplication which is why the plain MATLAB matrix multiplication is so fast. The gpuArray ve...
Convert JSON string to dict using Python
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– Ignacio Vazquez-Abrams
May 5 '15 at 7:43
64
@ShivamAgrawal: The difference is that .load() parses a ...
What's the best way to check if a file exists in C?
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edited Feb 6 '15 at 13:07
gsamaras
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an...
How to add pandas data to an existing csv file?
...10
root
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answered Jul 31 '13 at 16:19
tlingftlingf
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