大约有 5,000 项符合查询结果(耗时:0.0175秒) [XML]

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Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...户,如此一来顶多是反应慢点,但不会崩溃。 Redis的LIST数据类型可以很自然的创建一个队列,代码如下: <?php $redis = new Redis; $redis->connect('/tmp/redis.sock'); $redis->lPush('usr', <USRID>); while ($usr = $redis->rPop('usr')) { var_dump($u...
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A simple scenario using wait() and notify() in java

Can I get a complete simple scenario i.e. tutorial that suggest how this should be used, specifically with a Queue? 6 Answe...
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Best way to find the intersection of multiple sets?

...ed Dec 11 '19 at 13:08 Jean-François Fabre♦ 122k1111 gold badges9797 silver badges156156 bronze badges answered Mar 29 '10 at 22:55 ...
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App Inventor 2 字典代码块 · App Inventor 2 中文网

...列表,是一种将一个值(通常称为键)与另一个值关联的数据结构。 Q:App Inventor 2 什么情况下需要使用字典? A:列表能完成字典的绝大部分功能,不过字典具有比列表更好的查找性能,因此如果要对数据结构执行大量的操作...
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Convert from List into IEnumerable format

How shall I do in order to convert _Book_List into IEnumerable format? 6 Answers 6...
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将Linux代码移植到Windows的简单方法 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...ndir.h> header file. */ /* #undef HAVE_NDIR_H */ 第二步,调整各种数据类型的定义,可能在linux下面会有很多特殊的数据类型定义,Config.h文件中也包含了一部分可以变动的数据类型定义项。这些定义一般都是基本数据类型的重定义。可...
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Renaming or copying files and folder using NERDTree on Vim. Is it possible?

...nd a way o renaming or copying files and folder using NERDTree. Is it possible? 2 Answers ...
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如何查看Oracle用户的SQL执行历史记录? - 数据库(内核) - 清泛网 - 专注C/...

...和其他角色的系统权限 select * from dba_tab_privs; 数据库中对象的所有授权 select * from user_role_privs; 查看当前用户的角色 清泛网注:以下内容更详细深入,来源:http://www.cnblogs.com/net2012/archive/2013/01/21/2869636.html...
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What is the best django model field to use to represent a US dollar amount?

I need to store a U.S. $ dollar amount in a field of a Django model. What is the best model field type to use? I need to be able to have the user enter this value (with error checking, only want a number accurate to cents), format it for output to users in different places, and use it to calculate...
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浅谈APM在电子交易系统中的应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...快速定位应用系统性能故障:通过对应用系统各种组件(数据库、中间件)的监测,迅速定位系统故障,如发生Oracle数据库死锁等问题。 优化系统性能:精确分析系统各个组件占用系统资源情况,中间件、数据库执行效率,根...