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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,...

...过程当中的一次颠覆性改变。与前面几代不同的是,蓝牙4.0版引入的BLE协议更注重功耗问题,而非通信速率的提升。这也使得低功耗蓝牙更加节能,能使设备的电池维持很长时间,因此在很多可穿戴设备中得到了应用。 0x2 BLE工...
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UILabel with text of two different colors

... | edited Apr 30 '14 at 17:34 Alex Cio 5,67644 gold badges3939 silver badges7373 bronze badges an...
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How to check whether a string contains a substring in Ruby

... 1394 You can use the include? method: my_string = "abcdefg" if my_string.include? "cde" puts "Str...
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Get value when selected ng-option changes

...em.name); } } Live example: http://jsfiddle.net/choroshin/9w5XT/4/ share | improve this answer | follow | ...
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Can I change the color of auto detected links on UITextView?

... | edited Mar 10 '15 at 9:41 ThomasCle 6,47677 gold badges3535 silver badges7777 bronze badges answered ...
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Using Enums while parsing JSON with GSON

... | edited Jun 4 '16 at 16:22 dthulke 81999 silver badges2121 bronze badges answered Nov 22 '...
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一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...你说,大数据是一种思维,一种技术,标志的是大数据的4V特点: Volume(大量)、Velocity(高速)、Variety(多样)、Value(价值)。大数据带来的是一种变革,打破了原有的随机分析(抽样调查)方法,采用所有全量的数据来进行分析,分析...
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Using arrays or std::vectors in C++, what's the performance gap?

...ons on vectors and arrays/pointers. // Assembly code was generated by gcc 4.1.0 invoked with g++ -O3 -S on a // x86_64-suse-linux machine. #include <vector> struct S { int padding; std::vector<int> v; int * p; std::vector<int>::iterator i; }; int pointer_index (S &a...
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Reshaping data.frame from wide to long format

... = c("Code", "Country"), timevar = "Year", times = 1950:1954) share | improve this answer | follow | ...
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vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术

...用C++代码直接表达EBNF; (3)Graph,图组件和算法; (4)Lambda,在调用的地方定义短小匿名的函数对象,很实用的functional功能; (5)concept check,检查泛型编程中的concept; (6)Mpl,用模板实现的元编程框架; (7)Thread,...