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低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别 · App Inventor 2 中文网
... 蓝牙版本
蓝牙版本 >= 4.0，又称蓝牙低功耗、蓝牙智能
经典蓝牙2.0 或更早版本，经典配对模式在两台蓝牙设备之间建立虚拟串口数据连接，提供一种简单而直接的数据传输通路用于数据交换。
传输距离
...
Inserting a Link to a Webpage in an IPython Notebook
...//www.tensorflow.org/images/colab_logo_32px.png" # link to website
<img src="tidyflow.png" /> # The image file (This path is the same folder as Notebook file)
## <font color = cyan> Some Colored Text in Notebook Markdown Cell </font> # colored text
Output:
...
How can I call controller/view helper methods from the console in Ruby on Rails?
.../a>"
ActionController::Base.helpers.image_tag('logo.png') #=> "<img alt=\"Logo\" src=\"/images/logo.png\" />"
Render:
views = Rails::Application::Configuration.new(Rails.root).paths["app/views"]
views_helper = ActionView::Base.new views
views_helper.render 'myview/mytemplate'
views_...
Chrome desktop notification example [closed]
...on('Notification title', {
icon: 'http://cdn.sstatic.net/stackexchange/img/logos/so/so-icon.png',
body: 'Hey there! You\'ve been notified!',
});
notification.onclick = function() {
window.open('http://stackoverflow.com/a/13328397/1269037');
};
}
}
<button onclick="notify...
一个科技公司只是碰巧卖起了披萨？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...，达美乐英国分公司就尝试无人机的送餐方式。
2013年，智能机器人崭露头角，达美乐不甘落后，开始试水机器人外卖业务。
2014年，达美乐发布了两款iPad应用，即三维披萨制作器：披萨英雄(Pizza Hero)、披萨跟进(Pizza Tracker)。...
How to return images in flask response? [duplicate]
... i specify the path from the root directory: filename = './flaskapp/assets/imgs/ok.gif' ?
– AlexNikonov
Jun 4 at 15:32
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show 1 more comment...
CSS让文字半透明显示在图片上层 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
</head>
<body>
<div class="wrap">
<div class="photo"><a href="#">
<img src="https://www.tsingfun.com/statics/images/logo.png" border="0" alt=""/><span>标题层叠在图片上，文字和背景半透明。鼠标经过边框换色。</span></a></div>
</div>
</body>
</html>
CSS 半透明...
Convert HttpPostedFileBase to byte[]
...this worked for me, just to give some context - Thanks! ` Image img = Image.FromStream(file.InputStream); MemoryStream ms = new MemoryStream(); img.Save(ms, ImageFormat.Jpeg); model.SiteLogo = ms.ToArray();`
– VoodooChild
...
Is quoting the value of url() really necessary?
...
I had:
a.pic{
background-image: url(images/img (1).jpg);
}
It took me a while to understand that the filename closed brace was breaking the rule.
So it is not mandatory but, even if quoting is not-so-well understood by older browsers, it could save you some headach...
90后创业四年:曾经觉得不公 后来愿赌服输 - 资讯 - 清泛网 - 专注C/C++及内核技术
...，它的定位和目标很清晰。我们掌握了一项技术，用人工智能的方法让机器创作出曲子来。用户在听画App上传一张照片，我们能用人工智能技术为每张照片配上属于它的原创音乐。除了社交，我们更想把听画打造成草根音乐人的...