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Recommended way of making React component/div draggable
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I've updated polkovnikov.ph solution to React 16 / ES6 with enhancements like touch handling and snapping to a grid which is what I need for a game. Snapping to a grid alleviates the performance issues.
import React from 'react';
import ReactDOM from 'react-dom';
import PropTypes fro...
一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
...Z全面的数据及数据解析）
下载链接：
http://www.viewtool.com/index.php/22-2016-07-29-02-11-32/205-hollong-4-0-4-1-ble
4. MTU 请求（REQEUST）
完整数据（以下关注蓝色标注部分）
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Should I use SVN or Git? [closed]
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The repository's internal file formats are incredible simple.
This means repair is very easy to do, but even better because it's so simple its very hard to get corrupted. I don't think anyone has ever had a Git repository get corrupted. I've seen Subversion with fsfs corrupt itself. And I've seen ...
How do I find the caller of a method using stacktrace or reflection?
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An alternative solution can be found in a comment to this request for enhancement.
It uses the getClassContext() method of a custom SecurityManager and seems to be faster than the stack trace method.
The following program tests the speed of the different suggested methods (the most interesting...
What is the smallest possible valid PDF?
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As a PostScript (HA! See what I did there?), if you consent to Acrobat "repairing" the file, it bumps up to 3550 bytes, most of it optional metadata, but it leaves behind a number of clear spec violations.
share
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List of ANSI color escape sequences
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Um, I made an edit to repair a dead-link but I forgot I wasn't signed in at the time and I messed up the formatting slightly (I was trying to leave the old link but have it crossed-out) - unfortunately I cannot get at the edit to revise it, even t...
How to perform a real time search and filter on a HTML table
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I would recommend to enhance this approach because it is quite resource consuming. Put all the refined strings into an array of objects with two fields: a reference to the <tr> DOMElement and the string. This way, on keyup() you search thos...
C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ks对象
源Excel：
生成的结果Excel：
5、工程源码下载：ExcelDemo.zip
1233|1234|1455|2067C++ 高速读写 EXCEL OLE COM
Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...脚本实在太啰嗦，你只是想做一些备份文件、安装软件、下载数据之类的事情，学着使用sh，bash会是一个好主意。
shell只定义了一个非常简单的编程语言，所以，如果你的脚本程序复杂度较高，或者要操作的数据结构比较复杂...
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
...image, vector<vector<Point> >& squares)
{
// blur will enhance edge detection
Mat blurred(image);
medianBlur(image, blurred, 9);
Mat gray0(blurred.size(), CV_8U), gray;
vector<vector<Point> > contours;
// find squares in every color plane of the ...