1389. Linear Pachinko
Constraints
Time Limit: 1 secs, Memory Limit: 32 MB
Description
This problem is inspired by Pachinko, a popular game in Japan. A traditional Pachinko machine is...
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其他好文 时间:
2015-03-29 13:44:32
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124
1321. Robot
Constraints
Time Limit: 1 secs, Memory Limit: 32 MB
Description
Karell Incorporated has designed a new exploration robot that has the ability to explore new terrains, thi...
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其他好文 时间:
2015-03-29 13:44:15
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243
分2步骤:1.select * from user_constraints e where e.table_name='xxx';2.select a.constraint_type,a.table_name,a.status, b.table_name,b.column_name,b.const....
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数据库 时间:
2015-03-19 20:04:09
阅读次数:
315
在删除数据表的时候往往遇到外键约束无法删除的情况,我们可以通过以下几步将数据库表删除,建议在删除库之前先对数据库进行备份,养成良好习惯。1.删除外键--查询用户所有表的外键,owner条件为userselect * from user_constraints c where c.constraint...
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数据库 时间:
2015-03-17 00:40:07
阅读次数:
266
uva 116 Unidirectional TSPBackgroundProblems that require minimum paths through some domain appear in many different areas of computer science. For example, one of the constraints in VLSI routing probl...
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其他好文 时间:
2015-03-12 20:54:14
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185
codefirst涉及到级联删除时可能会报下面的错误:
table 'TableName' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints.
这是由于同一张表中使用了同一个...
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其他好文 时间:
2015-03-10 13:58:31
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130
错误示例:Exception in thread "main" org.hibernate.HibernateException: Error applying BeanValidation relational constraintsat org.hibernate.cfg.beanvalidat...
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移动开发 时间:
2015-03-08 20:00:23
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160
Constraints
约束
Everything in the UML has its own semantics. Generalization (usually, if you know what’s
good for you) implies the LisKov substitution principle, and multiple associati...
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其他好文 时间:
2015-03-06 09:41:44
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171
??
Terms and Concepts
术语和概念
A
note is a graphical symbol for rendering constraints or comments attached to an element or a collection of elements.
Graphically, a note is rendered as a...
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其他好文 时间:
2015-03-05 08:07:36
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198
参考:http://blog.sina.com.cn/s/blog_61feffe10100msbz.html,http://allenchou.net/2013/12/game-physics-constraints-sequential-impulse/约束就是限制物体的运动方式, 可以用来处理...
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其他好文 时间:
2015-03-04 18:37:21
阅读次数:
351