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App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
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HC05 简单介绍
它有六个引脚，引脚的作用如下：
通过厂商App连接串口测试，发现HC-05模块是经典蓝牙2.0，并不支持蓝牙5.0（低功耗BLE），它需要配对码进行配对，App Inventor 2 中使用“蓝牙客户端”组件，...
How to use dashes in HTML-5 data-* attributes in ASP.NET MVC
...t to the controller/action? Also what is %23 there
– transformer
Jan 2 '18 at 10:00
Yes use form collection and access...
Need a simple explanation of the inject method
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@Projjol the result + explanation is both the transformation to the accumulator and the return value. It's the last line in the block making it an implicit return.
– KA01
Sep 15 '16 at 16:02
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Java 8 Distinct by property
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This is called the Schwartzian transform
– Stuart Caie
May 16 '14 at 18:07
6
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How to “pretty” format JSON output in Ruby on Rails
...ally, to_json, as_json, jbuilder which I use mostly - whatever, middleware transforms any JSON output. I try to avoid opening classes whenever possible.
– gertas
Aug 31 '13 at 23:06
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How to remove all namespaces from XML with C#?
...T:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="no" encoding="UTF-8"/>
<xsl:template match="/|comment()|processing-instruction()">
<xsl:copy>
<xsl:apply-templates/>
</xsl:copy>...
Playing .mp3 and .wav in Java?
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I wrote a pure java mp3 player: mp3transform.
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jQuery: How can i create a simple overlay?
...dding: 5px;
position: absolute;
left: calc(100% - 100px);
text-transform: uppercase;
width: 50px;
}
JavaScript
(function () {
// Add photo overlay hover behavior to selected images
$("img[data-photo-overlay='true']").mouseenter(showPhotoOverlay);
// Create photo overl...
How to send FormData objects with Ajax-requests in jQuery? [duplicate]
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Setting processData to false lets you prevent jQuery from automatically transforming the data into a query string. See the docs for more info.
Setting the contentType to false is imperative, since otherwise jQuery will set it incorrectly.
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C++ 线程安全的单例模式 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++ 线程安全的单例模式一、懒汉模式：即第一次调用该类实例的时候才产生一个新的该类实例，并在以后仅返回此实例。需要用锁，来保证其线程安全性：原因：多个线程 一、懒汉模式：即第一次调用该类实例的时候才产生...