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GroupBy pandas DataFrame and select most common value
I have a data frame with three string columns. I know that the only one value in the 3rd column is valid for every combination of the first two. To clean the data I have to group by data frame by first two columns and select most common value of the third column for each combination.
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What are the primary differences between TDD and BDD? [closed]
Test Driven Development has been the rage in the .NET community for the last few years. Recently, I have heard grumblings in the ALT.NET community about BDD. What is it? What makes it different from TDD?
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HTTP GET Request in Node.js Express
How can I make an HTTP request from within Node.js or Express.js? I need to connect to another service. I am hoping the call is asynchronous and that the callback contains the remote server's response.
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Pick any kind of file via an Intent in Android
I would like to start an intentchooser for apps which can return any kind of file
7 Answers
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Permission denied (publickey) when SSH Access to Amazon EC2 instance [closed]
I want to use my Amazon ec2 instance but faced the following error:
29 Answers
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How many spaces will Java String.trim() remove?
In Java, I have a String like this:
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how to exclude null values in array_agg like in string_agg using postgres?
If I use array_agg to collect names, I get my names separated by commas, but in case there is a null value, that null is also taken as a name in the aggregate. For example :
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Loading Backbone and Underscore using RequireJS
I'm trying to load Backbone and Underscore (as well as jQuery) with RequireJS. With the latest versions of Backbone and Underscore, it seems kind of tricky. For one, Underscore automatically registers itself as a module, but Backbone assumes Underscore is available globally. I should also note that ...
Passing arrays as parameters in bash
How can I pass an array as parameter to a bash function?
13 Answers
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SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW
In Oracle, I can re-create a view with a single statement, as shown here:
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