定义:将一个复杂对象的构造与它的表示分离,使同样的构建过程可以创建不同的表示,这样的设计模式被称为建造者模式。
(separate the construction of a complex object from its representation so that the same construction process can create different representation...
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其他好文 时间:
2015-04-23 00:02:43
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165
Write an algorithm to determine if a number is "happy".
A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the squares...
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移动开发 时间:
2015-04-22 22:20:40
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137
Write an algorithm to determine if a number is “happy”.A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the squares of...
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移动开发 时间:
2015-04-22 22:15:41
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1099
android application 这个对象可能会被多次实例化, 这种情况在使用android:process元素的时候就会出现.其根本的原因是新开启的进程需要一个application对象服务4大组件. 下面给出一段获得当前进程的名称的代码, 通过它, 就可以判断是否运行在主进程了。/...
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移动开发 时间:
2015-04-22 22:04:19
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147
Write an algorithm to determine if a number is "happy".A happy number is a number defined by the following process: Starting with any positive integer...
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移动开发 时间:
2015-04-22 20:29:42
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170
题目描述
Write an algorithm to determine if a number is "happy".
A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the...
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移动开发 时间:
2015-04-22 18:40:10
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136
Write an algorithm to determine if a number is "happy".
A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the squares...
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移动开发 时间:
2015-04-22 18:14:05
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109
问题描述:
Oracle一直用数据泵备份,今天在终端备份时突然报ORA-39006: internal error错误。
数据泵导出日志文件为以下信息:
ORA-39097: Data Pump job encountered unexpected error -31644
ORA-39065: unexpected master process exception in F...
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数据库 时间:
2015-04-22 18:13:28
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222
一、forking 进程通过fork产生的进程有以下几个特点:
是一个进程的克隆。
创建的进程独立于父进程单独存在。
线程在调用fork()那那点被复制执行。
在子线程中返回0。
在父线程中返回子线程的pid
子线程的PID不同于父线程。
二、代码示例#!/usr/bin/env pythonimport osdef child_process():
print "I am the chi...
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编程语言 时间:
2015-04-22 14:02:16
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198
题意:
Write an algorithm to determine if a number is "happy".
A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of th...
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移动开发 时间:
2015-04-22 13:56:15
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155