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Generating matplotlib graphs without a running X server [duplicate]
...savefig('temp.png')
You don't have to use the Agg backend, as well. The pdf, ps, svg, agg, cairo, and gdk backends can all be used without an X-server. However, only the Agg backend will be built by default (I think?), so there's a good chance that the other backends may not be enabled on your p...
RSA 算法是如何诞生的 - 创意 - 清泛网 - 专注C/C++及内核技术
...离很近，可以经常串门。于是故事就从一次 Adleman 的串门开始了。
自左至右：Adi Shamir, Ron Rivest, Leonard Adleman (via)
42次的失败
1976 年底的某天，Adleman 无意推开 Rivest 的房门。热爱新技术的 Rivest 果不其然正拿着份楼上的 Whitf...
Quora如何在快速开发中保持高品质代码 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...速度快更重要，所以人们假定你会牺牲代码质量。
通过设计一系列工具和相应流程，我们得以打破僵局——在快速开发中仍能保持高品质代码。本文将介绍我们在Quora使用的这套方法和具体案例。
维护高质量代码的原因
高...
When should you branch?
...ge workflow between different kind of branches: "
"How Software Evolves" (pdf)
It defines the term codeline (branch which records significant evolution steps of the code, either through tags at certain points, or through important merge back to the branch)
It introduce the mainline model (a centr...
git + LaTeX workflow
...n in perl) that takes two latex files and produces a neat diffed output in pdf like this (image source):
You can combine git and latexdiff (plus latexpand if needed) in a single command using git-latexdiff (e.g. git latexdiff HEAD^ to view the diff between your worktree and the last-but-one commit)...
Return only string message from Spring MVC 3 Controller
...
//Load your attachment here
if (Arrays.equals(Constants.HEADER_BYTES_PDF, contentBytes)) {
headers.setContentType(MediaType.valueOf("application/pdf"));
fileName += ".pdf";
}
if (Arrays.equals(Constants.HEADER_BYTES_TIFF_BIG_ENDIAN, contentBytes)
|| Arrays.equals(Constantsr....
How can I list (ls) the 5 last modified files in a directory?
...22 phone2.7.py
-rw-r--r--@ 1 user staff 2.7M 10 Jan 15:26 03-cookies-1.pdf
-rw-r--r--@ 1 user staff 9.2M 9 Jan 16:21 Wk1_sem.pdf
-rw-r--r--@ 1 user staff 502K 8 Jan 10:20 lab-01.pdf
-rw-rw-rw-@ 1 user staff 2.0M 5 Jan 22:06 0410-1.wmv
...
How to set HTTP headers (for cache-control)?
...he time you leave the contents in the cache.
Use:
<FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|js|css|swf)$">
Header set Cache-Control "max-age=604800, public"
</FilesMatch>
Where: 604800 = 7 days
PS: This can be used to reset any header
...
OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...c8400f0e94.html
配置完成后 使用telnet 登录到服务器
开始更新openssh
yum update openssl
yum update openssh
重启服务
service sshd restart
使用ssh –V 查看更新成功没有
接下来就是噩梦的开始
升级好了之后，使用客户...
Your build failed due to an error in the AAPT stage, not because of an...
...选择“系统用户界面”。擦除缓存并重新启动设备。设备下载管理器缓存可能已损坏 - 转到设置/应用/全部并选择“下载管理器”。擦除缓存并重新启动设备。在设备上找不到 APK！放置 APK 的最佳位置是在下载文件夹中。屏幕上...