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Node.js quick file server (static files over HTTP)
... 'audio/wav',
'.mp3': 'audio/mpeg',
'.svg': 'image/svg+xml',
'.pdf': 'application/pdf',
'.doc': 'application/msword'
};
fs.exists(pathname, function (exist) {
if(!exist) {
// if the file is not found, return 404
res.statusCode = 404;
res.end(`File ${pathnam...
How to center icon and text in a android button with width set to “fill parent”
...android.material.button.MaterialButton
android:id="@+id/btnDownloadPdf"
android:layout_width="0dp"
android:layout_height="56dp"
android:layout_margin="16dp"
android:gravity="center"
android:textAllCaps="true"
app:backgroundTint="#fc0"
a...
App Inventor 2 物联网入门的两个方向：BLE直连硬件 vs MQTT云端通信，你的...
...ot;做学问"就对了。你不需要成为蓝牙协议专家或网络工程师——App Inventor 2 的 BlueToothLE 拓展和 UrsPahoMqttClient 拓展已经把底层封装好了。你需要做的只有三件事：
1. 判断你的设备在哪（身边 vs 远方）
2. 判断你的网络在哪...
CGRidCtrl控件 学习心得 - C/C++ - 清泛网 - 专注C/C++及内核技术
...后在CGridCtrlTestDlg::OnInitDialog()中添加如下代码：
//设置第五列内容
CStringArray list;
list.Add("a");
list.Add("b");
for ( i=1;i<5;i++)
{
m_GridCtrl->SetCellCombo(i,4,list);
}
运行，效果如下图所示：
图9
3.2.7 设置行背景颜色和列背景颜...
How to copy files from 'assets' folder to sdcard?
...nnels to do the work.
(Note) If using any type of compressed file, APK, PDF, ... you may want to rename the file extension before inserting into asset and then rename once you copy it to SDcard)
AssetManager am = context.getAssets();
AssetFileDescriptor afd = null;
try {
afd = am.openFd( "My...
What are some resources for getting started in operating system development? [closed]
...ooklet with line numbers
http://pdos.csail.mit.edu/6.828/2012/xv6/xv6-rev7.pdf
XV6 book - explains the main ideas of os design
http://pdos.csail.mit.edu/6.828/2012/xv6/book-rev7.pdf
The material is compact: 92 pages source and 96 pages commentary.
I like it more than the Minix book! It's a true g...
Why should I use document based database instead of relational database?
...ore paper documents, e.g. by scanning office mail. The data is the scanned PDF and you have some meta data which always exists (scanned at, scanned by, type of document) and lots of possible metadata fields which exists sometime (customer number, supplier number, order number, keep on file until, OC...
How do you get assembler output from C/C++ source in gcc?
... Algorithms for programmers, page 3 (which is the overall 15th page of the PDF).
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比尔盖茨“未来生活预言”的科技豪宅（图） - 资讯 - 清泛网 - 专注C/C++及内核技术
...大，66000平方英亩，相当于几十个足球场。
据说，土木工程干了整整七年，比尔先生先后砸进去了九千七百万美元，足够买下一家中型的上市公司了。
这座毫宅共有七间卧室、六所厨房、24个浴室、一座穹顶图书馆、一座...
奇葩职位为何频现互联网？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...月，阿里巴巴还宣布招聘程序员鼓励师，负责鼓励和赞美工程师，协助团队内部的交流。
互联网+时代是一个用户体验为王的时代，用户需求的变化已远超企业服务迭代升级的速度。中山大学管理学院副主任王帆接受南都记者采...