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一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...验告诉我，它们会分布在哪片山林，但是我们不知道具体位置，得一个一个的找。大数据可以解决这个难题。
我们可以把山林用数据可视化表现出来，然后让采野蘑菇的人根据自己的实战经验标出蘑菇分布的地点，并且把这些...
Logout: GET or POST?
...n of being logged in, then you should be able to to "log out" using javascript. No round trip required.
Fielding Dissertation - Section 5.1.3
each request from client to server
must contain all of the information
necessary to understand the request,
and cannot take advantage of any
s...
List of standard lengths for database fields
... Longest city name is 'Taumatawhakatangihangakoauauotamateaturipukakapikimaungahoronukupokaiwhenuakitanatahu' coming in at 85 characters. en.wikipedia.org/wiki/List_of_long_place_names
– binarysubstrate
Apr 5 '18 at 14:01
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开源邮件传输代理软件 -- Postfix 介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...。当系统运行超出了可用的内存或磁盘空间时，postfix会自动减少运行进程的数目。当处理的邮件数目增长时，postfix运行的进程不会跟着增加。
5. 更灵活：
postfix是由超过一打的小程序组成的，每个程序完成特定的功能。你...
Running python script inside ipython
Is it possible to run a python script (not module) from inside ipython without indicating its path? I tried to set PYTHONPATH but it seems to work only for modules.
I would like to execute
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What is the benefit of using $() instead of backticks in shell scripts?
... illustration as to how you can nest, not as a bug-free production-ready snippet.
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BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...占位符；全局的已初始化变量存于.data 段中；而函数内的自动变量都在栈上分配空间。.bss 是不占用.exe 文件空间的，其内容由操作系统初始化（清零）；而.data 却需要占用，其内容由程序初始化，因此造成了上述情况。
【例二...
what's the correct way to send a file from REST web service to client?
...answered Sep 3 '12 at 16:18
Philipp ReichartPhilipp Reichart
19.6k55 gold badges5252 silver badges6464 bronze badges
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Java regex email
...le.com
"Joe\\Blow"@example.com
"Abc@def"@example.com
customer/department=shipping@examp le.com
$A12345@example.com
!def!xyz%abc@example.com
_somename@example.com
matteo(this is a comment).corti@example.com
root@[127.0.0.1]
Just to mention a few problems:
you don't consider the many forms of sp...
通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...统当前状态的参数，例如 /proc/sys/kernel/pid_max，/proc/sys/net/ipv4/ip_local_port_range 等等，从文件的名字大致可以猜出所限制的资源种类。由于该目录下涉及的文件众多，在此不一一介绍。有兴趣的读者可打开其中的相关文件查阅说明...