在lighttpd网络模型里面我们可以看到以下代码 1 /* accept()s at most 100 connections directly 2 * 3 * we jump out after 100 to give the waiting connections a ch...
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其他好文 时间:
2014-09-29 12:53:40
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160
第10章 | 充电时刻
本章主要介绍模块及其工作机制
------
模块
>>> import math
>>> math.sin(0)
0.0
模块是程序
一个简单的模块
#hello.py
print ("Hello,World!")
>>> import hello
Traceback (most recent call last):
File "", line 1, in
import hello
ImportError: No module n...
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编程语言 时间:
2014-09-28 23:11:56
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485
DescriptionDuring winter, the most hungry and severe time, Holedox sleeps in its lair. When spring comes, Holedox wakes up, moves to the exit of its l...
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其他好文 时间:
2014-09-28 19:37:15
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519
>>> d = {'a':1}>>> print '%s' % 1,d1 {'a': 1}>>> print '%s %s' % 1,dTraceback (most recent call last): File "", line 1, in TypeError: not enough argu....
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编程语言 时间:
2014-09-28 04:29:10
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203
Problem Description
Think about a plane:
● One straight line can divide a plane into two regions.
● Two lines can divide a plane into at most four regions.
● Three lines can divide a plane int...
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其他好文 时间:
2014-09-28 01:35:10
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361
众所周知,oracle段都有一个在段内容纳数据块的上限,我们把这个上限称为"High Water Mark"(HWM)。这个HWM是一个标记,用来说明已经有多少没有使用的数据块分配给这个segment。原则上HWM只会增大,不会缩小,即使将表中的数据全部删除,HWM还是为原值。HWM就像一个水库的历史最高水位,这也是为何会称之为“高水位”的缘故。实际环境中随着我们表中数据的不断增长,表的高水位也被不断的推高。当高水位达到一定程度之后,会对该表上的SQL查询效率产生负面影响,因此需要采取有效措施降低高水位。下...
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其他好文 时间:
2014-09-27 19:25:20
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304
Problem Description
In 2100, since the sea level rise, most of the cities disappear. Though some survived cities are still connected with others, but most of them become disconnected. The governmen...
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其他好文 时间:
2014-09-26 23:38:58
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209
In UNIX, tar is the most useful tool to compress files (just like zip in Windows.)To compress, input: tar -cvzf file.tar.gz inputfile1 inputfile2to u....
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其他好文 时间:
2014-09-26 20:18:28
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236
PHP has large number of predefined constants. This HOWTO will present the seven most important, most practical and most useful PHP Magic Constants.__F...
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Web程序 时间:
2014-09-25 21:58:27
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200
Problem:Say you have an array for which theithelement is the price of a given stock on dayi.If you were only permitted to complete at most one transac...
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其他好文 时间:
2014-09-25 21:10:47
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171