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【MongoDB】The description of procedure in MongoDB
In this blog the procedure of mongodb will be described in details. It is known that mongodb has provided a series of efficient solution to some different questions, such as high performance, changeab...
分类:数据库   时间:2014-10-27 00:32:16    阅读次数:348
Python : Data Encapsulation
Python : Data EncapsulationThe following table shows the different behaviour:NameNotationBehaviournamePublicCan be accessed from inside and outside_na...
分类:编程语言   时间:2014-10-26 21:02:13    阅读次数:274
malloc()与calloc差别
Both the malloc() and the calloc() functions are used to allocate dynamic memory. Each operates slightly different from the other. Both the malloc() a...
分类:其他好文   时间:2014-10-25 11:43:21    阅读次数:335
pig加载两个不同字段个数的文件?load file with different items(f1有42列,f2有43列读到一个对象中)
我文章提到,加载一个文件的部分列是可行。两列,你只读一列,没问题。 但是,两个文件,f1和f2,f1有42列,f2有43列,同时加载到一个流对象,如何? 答:成功加载。但是无结构,discribe后看到:Schema for origin_cleaned_data unknown。这种情况类似merge,合并两个不同列的对象,会生成一个未知模式对象。 背景:因为老日志42列,新日志多...
分类:其他好文   时间:2014-10-24 18:55:55    阅读次数:313
Java StringTokenizer Example
In Java, you can use StringTokennizer class to split a String into different tokenas by defined delimiter.(space is the default delimiter). Here’re tw...
分类:编程语言   时间:2014-10-24 06:51:08    阅读次数:233
北京大学创业训练营专家讲座:创新大师乔布斯的创业理念与营销哲学
北京大学创业训练营专家讲座   Think Different --创新大师乔布斯的创业理念与营销哲学 主讲人:北京大学 黎怡兰 副教授       各位亲爱的创业营童鞋们,      请问你抢购到iPhone6 的手机了吗?10月5日是IT界创新大师暨营销奇才Steve Jobs(乔布斯)逝世三周年,乔布斯的一生虽然短暂,但他对人类的生活有着巨大...
分类:其他好文   时间:2014-10-22 12:53:06    阅读次数:227
【MongoDB】The connection between two tables
In mongoDB, there are two general way to connect with two tables. Manual Connection and use DBRef 1. Basically manual connection  Firstly init the data which was saved in the different collections....
分类:数据库   时间:2014-10-22 06:28:15    阅读次数:197
[RK_2014_1020]Cannot declare member function ‘static int Foo::bar()’ to have static linkage
1.if you declare a method to be static in your .cc file.The reason is thatstaticmeans something different inside .cc files than in class declarations ...
分类:其他好文   时间:2014-10-20 19:24:37    阅读次数:223
ural 1057 Amount of Degrees(数位DP)
1057. Amount of Degrees Time limit: 1.0 second Memory limit: 64 MB Create a code to determine the amount of integers, lying in the set [X;Y] and being a sum of exactlyK different integer de...
分类:其他好文   时间:2014-10-20 15:16:05    阅读次数:227
OpenERP 7.0 导入 FAQ
Frequently Asked QuestionsNeed to import data from an other application?In order to re-create relationships between different records, you should use ...
分类:其他好文   时间:2014-10-18 19:35:10    阅读次数:306
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