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【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛,有思想、有深度
...从机设备发起连接请求,从而连接从机设备并通信。扫描动作有两个比较重要的时间参数:扫描窗口和扫描间隔,如果扫描窗口等于扫描间隔,那么主机将一直处于扫描状态之中,持续监听从机广播包。
被动扫描,主机监听...
Using the “start” command with parameters passed to the started program
I have a Virtual Machine in Virtual PC 2007.
12 Answers
12
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Principal component analysis in Python
I'd like to use principal component analysis (PCA) for dimensionality reduction. Does numpy or scipy already have it, or do I have to roll my own using numpy.linalg.eigh ?
...
Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?
...4685adb4 10 00974130 fp 4b857ed8
ip 00000000 sp 4b857b50 lr afd11108 pc ad115ebc cpsr 20000030
d0 4040000040000000 d1 0000004200000003
d2 4e72cd924285e370 d3 00e81fe04b1b64d8
d4 3fbc71c7009b64d8 d5 3fe999999999999a
d6 4010000000000000 d7 4000000000000000
d8 4000000000000000 ...
CGRidCtrl控件 学习心得 - C/C++ - 清泛网 - 专注C/C++及内核技术
...标注"只读"或者其他的状态设置及检测
u 单元格的拖放动作
u 可以对任何列或行固定
u Ctrl-C, Ctrl-X和Ctrl-V执行拷贝、剪切、粘贴操作,Ctrl-A全选
u 当单元格成为焦点,并且在单元格的编辑区域按下字符键,就意味着在
那个...
Can You Get A Users Local LAN IP Address Via JavaScript?
...local client IP address. A proof of concept is available here: http://net.ipcalf.com
This feature is apparently by design, and is not a bug. However, given its controversial nature, I would be cautious about relying on this behaviour. Nevertheless, I think it perfectly and appropriately addresses y...
字符串指针变量与字符数组的区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...有定义字符型指针变量与字符数组的语句如下: char *pc ,str[100]; 则系统...使用字符串指针变量与字符数组的区别
(1)分配内存
设有定义字符型指针变量与字符数组的语句如下:
char *pc ,str[100];
则系统将...
汇编语言超浓缩教程(汇编入门必备) - C/C++ - 清泛网 - 专注C/C++及内核技术
...响,可用其他相关指令,查出标志的状态,根据状态产生动作。CMP指令很像减法,是将两个表达式的值相减,但寄存器或内存的内容并未改变,只是相对的标志位发生改变而已:若 AL 值小于 3Ah,则正负号标志位会置0,反之则置...
AngularJS access parent scope from child controller
...o the original poster.
HTML
<div ng-app ng-controller="ParentCtrl as pc">
<div ng-controller="ChildCtrl as cc">
<pre>{{cc.parentCities | json}}</pre>
<pre>{{pc.cities | json}}</pre>
</div>
</div>
JS
function ParentCtrl() {...
转型产品经理必看 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...考虑整个业务流程中涉及哪些关键角色,这些角色的关键动作是什么,业务流程中包括哪些关键信息,同时要定义清楚各角色间信息流动的方式。完成对业务目标、关键角色及动作、关键信息的定义后,可以使用流程图将设计好...
