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BLE(二)信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区,...

...。 Service和Characteristic则是比较重要的,Service可以理解为PHP中的“类”、功能对象的集合。Characteristic可以理解为PHP的“函数”,是GATT中具体的功能对象,每个Service都可以包含一个或多个Characteristic(特征)。Characteristic是GATT pr...
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C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术

...,做了delete ip操作,所以释放了内存,不会有内存泄露的问题。 接下来的操作很自然,无需多言: ptr = rhs.ptr; // 复制U_Ptr指针 val = rhs.val; // 复制int成员 return *this; 做完赋值操作后,那么就成为如下图所示了。红色标注...
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How to list the properties of a JavaScript object?

...s5-compat-table/ Description of new methods: http://markcaudill.com/index.php/2009/04/javascript-new-features-ecma5/ share | improve this answer | follow | ...
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How can I change a file's encoding with vim?

... thank you! Apache was outputting utf-8, so was php, so the browser said, so vim said with set encoding, and still the pages showed mangled characters that were alright as iso-8859-1. using set fileencoding showed a pretty 'Latin1' – Adriano Varoli Pi...
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Are unused CSS images downloaded?

...e="text/css"> .nonexistent { background: url('index.php?foo'); } </style> </head> <body> <?php if(isset($_GET['foo'])) { file_put_contents('test.txt', $_SERVER['HTTP_USER_AGENT']); } ?> </body> </html> If te...
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初创公司如何利用社交媒体实现营销效果最大化? - 资讯 - 清泛网 - 专注C/C...

...持客户参与度,同时,社交媒体经理也要回复评论、回答问题。 l 分析:分析监控,这包括了销售量分析,粉丝分析,参与度和客户情感分析,这些分析对于优化内容策略,并及时调整公司社交媒体管理战略都是非常重要的。 ...
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C语言之父辞世引发“分号”悼念 - 创意 - 清泛网 - 专注C/C++及内核技术

...要一门高级计算机语言做工具,为了解决程序的可移植性问题,肯·汤普逊和丹尼斯·里奇决定对它进行简单改进,形成 NB语言。但NB在Unix的移植方面依然不尽人意,此后里奇又对NB语言做了改进,C语言诞生。 这被计算机界认为...
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Amazon S3 Change file download name

...t-disposition" while submit the file to S3, the SDK version is AWS SDK for PHP 3.x. here is the doc http://docs.amazonaws.cn/en_us/aws-sdk-php/latest/api-s3-2006-03-01.html#putobject a piece of my code public function __construct($config) { $this->handle = new S3Client([ ...
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How to set selected value of jquery select2?

... Html: <select id="lang" > <option value="php">php</option> <option value="asp">asp</option> <option value="java">java</option> </select> JavaScript: $("#lang").select2().select2('val','asp'); jsfiddle ...
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How long is the SHA256 hash?

...h = hash('sha256', 'hello, world!'); var_dump($hash); Will give you : $ php temp.php string(64) "68e656b251e67e8358bef8483ab0d51c6619f3e7a1a9f0e75838d41ff368f728" i.e. a string with 64 characters. share | ...