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Remap values in pandas column with a dict
I have a dictionary which looks like this: di = {1: "A", 2: "B"}
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How can I use “:” as an AWK field separator?
Given the following command,
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Passing by reference in C
If C does not support passing a variable by reference, why does this work?
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C# equivalent of the IsNull() function in SQL Server
In SQL Server you can use the IsNull() function to check if a value is null, and if it is, return another value. Now I am wondering if there is anything similar in C#.
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Plot correlation matrix into a graph
I have a matrix with some correlation values. Now I want to plot that in a graph that looks more or less like that:
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How to pass json POST data to Web API method as an object?
ASP.NET MVC4 Web API application defines post method to save customer.
Customer is passed in json format in POST request body.
Customer parameter in post method contains null values for properties.
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Fetch frame count with ffmpeg
Does anyone know how to fetch the number of total frames from a video file using ffmpeg? The render output of ffmpeg shows the current frame and I need the frame count to calculate the progress in percent.
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How to strip all non-alphabetic characters from string in SQL Server?
How could you remove all characters that are not alphabetic from a string?
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What is href=“#” and why is it used?
On many websites I see links that have href="#" . What does it mean? What is it used for?
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How to unload a package without restarting R
I'd like to unload a package without having to restart R (mostly because restarting R as I try out different, conflicting packages is getting frustrating, but conceivably this could be used in a program to use one function and then another--although namespace referencing is probably a better idea fo...