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查询：SELECT stu_id, (SELECT stu_name FROM t_student_info t WHERE t.stu_id = t.stu_id) stu_name FROM (SELECT SUM( CASE course WHEN '敮..
错误代码：...
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其他好文 时间：
2015-05-06 22:57:02
阅读次数：
205
关于public继承塑模出is-a关系这句话 出现在各种书中 但个人感觉在java编程思想中讲的最简洁 最本质。public inheritance(公开继承)意味着”is-a”的关系, 适用于base classes身上的每一件事情一定也适用于derived classes身上，因为每一个derived class对象也都是一个base class对象
例子：
如果class D以public...
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编程语言 时间：
2015-04-29 17:17:32
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138
The CentOS Linux distribution is a stable, predictable, manageable and reproduceable platform derived from the sources of Red Hat Enterprise Linux (RH...
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其他好文 时间：
2015-04-27 20:04:21
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253
The packages we need for ubuntu12.04 and its derived destros are:libimobiledevices, libplist, libusbmuxdMostly the important thing is libimobiledevice...
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系统相关 时间：
2015-04-08 14:42:53
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170
1.Abstractdoes force all the derived classes toimplementthemethod, but nothing forces thederivedderived classesto implement its own DrawWindow() metho...
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其他好文 时间：
2015-04-06 20:08:39
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99
protected internal
The type or member can be accessed by any code in the assembly in which it is declared, or from within a derived class in another assembly. Access from another assembly must take p...
练习4-6原文Exercise 4.6. Let expressions are derived expressions, because
(let (( ) … ( )) )
is equivalent to
((lambda ( … ) ) )
Implement a syntactic transformation let->combination that reduces...
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其他好文 时间：
2015-04-01 09:35:32
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153
A line filter is a common type of program that reads input on stdin, processes it, and then prints some derived result to stdout. grep and sed are com...
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其他好文 时间：
2015-03-31 14:13:53
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132
1. Use override to indicate that it does want to override of the base method inthe parentclass. If the derived class don't use the override, we can't ...
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其他好文 时间：
2015-03-30 18:27:31
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125
Private继承意味is-implemented-in-terms of（根据某物实现出）。它通常比复合（composition）的级别低。但是当derived class需要访问protected base class的成员，或需要重新定义继承而来的virtual函数时，这么设计是合理的。和复合...
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编程语言 时间：
2015-03-21 22:51:53
阅读次数：
233
