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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...
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...
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/
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How can I change a file's encoding with vim?
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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...
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', $_SERVER['HTTP_USER_AGENT']);
} ?>
</body>
</html>
If te...
初创公司如何利用社交媒体实现营销效果最大化? - 资讯 - 清泛网 - 专注C/C...
...持客户参与度,同时,社交媒体经理也要回复评论、回答问题。
l 分析:分析监控,这包括了销售量分析,粉丝分析,参与度和客户情感分析,这些分析对于优化内容策略,并及时调整公司社交媒体管理战略都是非常重要的。
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C语言之父辞世引发“分号”悼念 - 创意 - 清泛网 - 专注C/C++及内核技术
...要一门高级计算机语言做工具,为了解决程序的可移植性问题,肯·汤普逊和丹尼斯·里奇决定对它进行简单改进,形成 NB语言。但NB在Unix的移植方面依然不尽人意,此后里奇又对NB语言做了改进,C语言诞生。
这被计算机界认为...
Amazon S3 Change file download name
...t-disposition" while submit the file to S3, the SDK version is AWS SDK for PHP 3.x. here is the doc http://docs.amazonaws.cn/en_us/aws-sdk-php/latest/api-s3-2006-03-01.html#putobject
a piece of my code
public function __construct($config)
{
$this->handle = new S3Client([
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How to set selected value of jquery select2?
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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.
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