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MongoDb query condition on comparing 2 fields
I have a collection T , with 2 fields: Grade1 and Grade2 , and I want to select those with condition Grade1 > Grade2 , how can I get a query like in MySQL?
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Is there a built in function for string natural sort?
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I wrote a function based on http://www.codinghorror.com/blog/2007/12/sorting-for-humans-natural-sort-order.html which adds the ability to still pass in your own 'key' parameter. I need this in order to perform a natural sort of lists that contain more c...
C++特化模板函数的符号多重定义错误问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
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3.部分特化的定义与通用模板的定义完全无
来源：http://blog.csdn.net/kikikind/article/details/2713357
模板函数 特化 重定义
A migration to add unique constraint to a combination of columns
...ship.create!(user_id: user_id, post_id: post_id)
Fully runnable example: https://gist.github.com/Dorian/9d641ca78dad8eb64736173614d97ced
db/schema.rb generated: https://gist.github.com/Dorian/a8449287fa62b88463f48da986c1744a
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How can you use optional parameters in C#?
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From this site:
http://www.tek-tips.com/viewthread.cfm?qid=1500861&page=1
C# does allow the use of the [Optional] attribute (from VB, though not functional in C#). So you can have a method like this:
using System.Runtime.InteropService...
Passing variables in remote ssh command
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Getting unique items from a list [duplicate]
What is the fastest / most efficient way of getting all the distinct items from a list?
5 Answers
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setTimeout / clearTimeout problems
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Plotting a list of (x, y) coordinates in python matplotlib
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COUNT DISTINCT with CONDITIONS
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