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Java 理论与实践: 线程池与工作队列 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...互斥、信号量、诸如在并发访问下执行得很好的队列和散列表之类集合类以及几个工作队列实现。该包中的 PooledExecutor 类是一种有效的、广泛使用的以工作队列为基础的线程池的正确实现。您无须尝试编写您自己的线程池，这...
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
...段，sed则可以实现更新插入删除等写操作。
ps
查看进程列表
grep排除grep自身查找与target相邻的结果awksed插入替换删除xargscurl综合案例
参考资料
Advanced Bash-Scripting Guide，非常详细，非常易读，大量example，既可以当入门教...
Fetch frame count with ffmpeg
...nd footer (noprint_wrappers=1). There are shorter alternatives such as -of csv=p=0.
Also see
FFprobe Documentation
FFmpeg Wiki: FFprobe Tips
mediainfo
The well known mediainfo tool can output the number of frames:
mediainfo --Output="Video;%FrameCount%" input.avi
MP4Box
For MP4/M4V/M4...
Reading large text files with streams in C#
...ovement.
Related
I came across a case where streaming a large, generated CSV file to the Response stream from an ASP.Net MVC action was very slow. Adding a BufferedStream improved performance by 100x in this instance. For more see Unbuffered Output Very Slow
...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...这个文件就算读取完毕了？一般地，每个一个记录值为下列表中值，则说明已经读到文件的末尾了。
系统格式
末尾取值
Fat12
0xfff
Fat16
0xffff
Fat32
0x0fffffff
...
An efficient way to transpose a file in Bash
...
Worked well with a csv of size 2 GB.
– discipulus
Nov 8 '16 at 3:10
2
...
How can I access Google Sheet spreadsheets only with Javascript?
...lization API Query Language to query the data (which can return results in CSV, JSON, or HTML table format).
Forget jQuery. jQuery is only really valuable if you're traversing the DOM. Since GAS (Google Apps Scripting) doesn't use the DOM jQuery will add no value to your code. Stick to vanilla.
...
T-SQL split string
...x---------x
2. Converting to rows from a table which have an ID for each CSV row
SOURCE TABLE
x-----x--------------------------x
| Id | Value |
x-----x--------------------------x
| 1 | String1,String2,String3 |
| 2 | String4,String5,String6 |
x-----x---------...
Mozilla PDF.js：PDF在线预览 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...工作所需的浏览器的测试要求，请参考如下浏览器特性的列表：
Browser
Supported
Automated Testing
Notes
Firefox Stable
yes
Windows and Linux
Chrome Stable
yes
Windows and Linux
...
Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
...he same output is in compare_output$comparison_df which you can write to a CSV/TEXT fule using native R functions.
– Alex Joseph
Feb 13 '19 at 11:37
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