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推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
推荐系统算法初探最近因为PAC平台自动化的需求，开始探坑推荐系统。这个乍一听去乐趣无穷的课题，对于算法大神们来说是这样的：而对于刚接触这个领域的我来...最近因为PAC平台自动化的需求，开始探坑推荐系统。这个乍一...
程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
...器读取证书。
浏览器发现证书机构是Symantec，然后会在操作系统中受信任的发布机构的证书中去找Symantec的证书，如果找不到，那说明证书的发布机构是个假的，或者不是被权威机构认证的，证书可能有问题，程序会给出一个错...
How do malloc() and free() work?
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OK some answers about malloc were already posted.
The more interesting part is how free works (and in this direction, malloc too can be understood better).
In many malloc/free implementations, free does normally not return the memory to the operating system (or at l...
Linux下追踪程序退出(崩溃)思路 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
Linux下追踪程序退出(崩溃)思路linux-issue-trackingLinux下追踪程序退出(崩溃)思路；history命令用法；linux下查看所有登录用户的历史操作命令。
Linux下程序退出(崩溃)时总会留下一些蛛丝马迹，问题追踪思路总结如下：
1、查看程序...
Win7以上操作系统清理系统图标缓存脚本 - 脚本技术 - 清泛IT论坛，有思想、有深度
本帖最后由 沧海一粟 于 2015-07-21 13:43 编辑
rem 关闭Windows外壳程序explorer
taskkill /f /im explorer.exe
rem 清理系统图标缓存数据库
attrib -h -s -r "%userprofile%\AppData\Local\IconCache.db"
del /f "%userprofile%\AppData\Local\IconCache.db"
attrib...
STL 算法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...传递给函数模板的一种参数格式而已
STL中算法分类:
操作对象
直接改变容器的内容
将原容器的内容复制一份,修改其副本,然后传回该副本
功能:
非可变序列算法 指不直接修改其所操作的容器内容的算法
可变序列算...
How to import other Python files?
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There are many ways to import a python file, all with their pros and cons.
Don't just hastily pick the first import strategy that works for you or else you'll have to rewrite the codebase later on when you find it doesn't meet your needs.
I'll start out explaining the easiest exampl...
What does Python's eval() do?
...ing and then have python run it as code. So for example: eval("__import__('os').remove('file')").
– BYS2
Feb 21 '12 at 19:24
...
How to run a Python script in the background even after I logout SSH?
... process exits with status 1. What's going on?
– Santosh Ghimire
Dec 7 '13 at 15:03
1
read the ou...
How to change line-ending settings
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Line ending format used in OS
Windows: CR (Carriage Return \r) and LF (LineFeed \n) pair
OSX,Linux: LF (LineFeed \n)
We can configure git to auto-correct line ending formats for each OS in two ways.
Git Global configuration
Use .gitattributes file
...