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(this == null) in C#!
Due to a bug that was fixed in C# 4, the following program prints true . (Try it in LINQPad)
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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 read and write excel file
I want to read and write an Excel file from Java with 3 columns and N rows, printing one string in each cell. Can anyone give me simple code snippet for this? Do I need to use any external lib or does Java have built-in support for it?
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Delaying a jquery script until everything else has loaded
I have a jquery script which I need to run only once everything else on the page, including some other javascripts (over which I have no control) have finished doing their thing.
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How to run Rails console in the test environment and load test_helper.rb?
The background: I'm having some problems with Thoughtbot's "Factory Girl" gem, with is used to create objects to use in unit and other tests. I'd like to go to the console and run different Factory Girl calls to check out what's happening. For example, I'd like to go in there are do...
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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 ...
How do you append an int to a string in C++? [duplicate]
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Replace non-numeric with empty string
Quick add on requirement in our project. A field in our DB to hold a phone number is set to only allow 10 characters. So, if I get passed "(913)-444-5555" or anything else, is there a quick way to run a string through some kind of special replace function that I can pass it a set of characters to ...
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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