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App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
...论
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经典蓝牙硬件有很多款，但是hc05尤为常见，这里以hc05为例，介绍一下经典蓝牙模块如何接入AppInventor。
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...
Sound effects in JavaScript / HTML5
... constructor, if it was set.
pitch : 'A4', // A4 is 440 hertz.
label : 'A', // A label that identifies this note.
env : {hold : 9001},
panning : [1, -1, 10],
filter : {frequency : 900},
delay : {delayTime : .8}
})
Sound for Games
Another library similar to W...
了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
...
缺乏定义良好的、用于处理文件系统操作的库，这一直是 C++ 语言存在的一个问题。过去，程序员必须使用本机 API 来解决此问题。通过本文您将了解一个提供安全、可移植且易用的 C++ 接口来促进文件系统操作的库：Boost Filesys...
Cleaning up old remote git branches
...n literally to any commit(aka save) and others with this. Branch is just a label, deleting the label does not delete the save... it will forever have a checksum. Let me know if I can help
– Timothy L.J. Stewart
Sep 30 '16 at 11:48
...
关于php的socket初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...望去学习新知识的那种动力，可能在大多数的人眼里，php是专为web而生，做wep app是一流的快速好用，并极易简单和容易上手，做起web所需的各项功能可能是分分钟搞定，然后做socket了？可能就觉得不屑一顾了，好像是不务正业...
Multiple ModelAdmins/views for same model in Django admin
...in, model, name = None):
class Meta:
proxy = True
app_label = model._meta.app_label
attrs = {'__module__': '', 'Meta': Meta}
newmodel = type(name, (model,), attrs)
admin.site.register(newmodel, modeladmin)
return modeladmin
This can be used as follows:
clas...
Breaking a list into multiple columns in Latex
...kage{multicol}
\newlist{multienum}{enumerate}{1}
\setlist[multienum]{
label=\alph*),
before=\begin{multicols}{2},
after=\end{multicols}
}
\newlist{multiitem}{itemize}{1}
\setlist[multiitem]{
label=\textbullet,
before=\begin{multicols}{2},
after=\end{multicols}
}
\begin{doc...
What are advantages of Artificial Neural Networks over Support Vector Machines? [closed]
...VM system can be applied directly to non-metric spaces, such as the set of labeled graphs or strings. In fact, the internal kernel function can be generalized properly to virtually any kind of input, provided that the positive definiteness requirement of the kernel is satisfied. On the other hand, t...
“二孩”遇上母婴产业 创业者必读的数据干货 - 资讯 - 清泛网 - 专注C/C++...
...示了四种不同类型企业的母婴产业思路及不同特征。
一是以BAT为代表的互联网巨头，加速母婴领域布局。百度在2014年上线母婴健康类应用“宝宝知道”，2015年以1.5亿美元领投领投母婴电商“蜜芽宝贝”D轮(详见钛媒体此前报道...
How do I pass JavaScript variables to PHP?
...ose the salary id to proceed result:</p>
<p>
<label for="salarieids">SalarieID:</label>
<?php
$query = "SELECT * FROM salarie";
$result = mysql_query($query);
if ($result) :
?>
<select id="salarieids...