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How to Store Historical Data
Some co-workers and I got into a debate on the best way to store historical data. Currently, for some systems, I use a separate table to store historical data, and I keep an original table for the current, active record. So, let's say I have table FOO. Under my system, all active records will go ...
一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...一种技术，标志的是大数据的4V特点：
Volume(大量)、Velocity(高速)、Variety(多样)、Value(价值)。大数据带来的是一种变革，打破了原有的随机分析(抽样调查)方法，采用所有全量的数据来进行分析，分析的数据更加复杂，有结构化...
How to convert array values to lowercase in PHP?
How can I convert all values in an array to lowercase in PHP?
10 Answers
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Advantages of std::for_each over for loop
Are there any advantages of std::for_each over for loop? To me, std::for_each only seems to hinder the readability of code. Why do then some coding standards recommend its use?
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SVG gradient using CSS
I'm trying to get a gradient applied to an SVG rect element.
6 Answers
6
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How do I sort a vector of pairs based on the second element of the pair?
If I have a vector of pairs:
7 Answers
7
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Is there a better way to express nested namespaces in C++ within the header
I switched from C++ to Java and C# and think the usage of namespaces/packages is much better there (well structured). Then I came back to C++ and tried to use namespaces the same way but the required syntax is horrible within the header file.
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How to initialize log4j properly?
After adding log4j to my application I get the following output every time I execute my application:
24 Answers
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How do I install PyCrypto on Windows?
I've read every other google source and SO thread, with nothing working.
20 Answers
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Learning to write a compiler [closed]
Preferred languages : C/C++, Java, and Ruby.
38 Answers
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