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Determine font color based on background color
Given a system (a website for instance) that lets a user customize the background color for some section but not the font color (to keep number of options to a minimum), is there a way to programmatically determine if a "light" or "dark" font color is necessary?
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How do you detect Credit card type based on number?
I'm trying to figure out how to detect the type of credit card based purely on its number. Does anyone know of a definitive, reliable way to find this?
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Create an empty list in python with certain size
I want to create an empty list (or whatever is the best way) that can hold 10 elements.
15 Answers
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how do I insert a column at a specific column index in pandas?
Can I insert a column at a specific column index in pandas?
4 Answers
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Concatenate two slices in Go
I'm trying to combine the slice [1, 2] and the slice [3, 4] . How can I do this in Go?
7 Answers
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What is the JavaScript >>> operator and how do you use it?
I was looking at code from Mozilla that add a filter method to Array and it had a line of code that confused me.
7 Answers
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How to model type-safe enum types?
Scala doesn't have type-safe enum s like Java has. Given a set of related constants, what would be the best way in Scala to represent those constants?
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How to get a value from a cell of a dataframe?
I have constructed a condition that extract exactly one row from my data frame:
11 Answers
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How do I list all versions of a gem available at a remote site?
I'm trying to find out all the remotely available versions of a specified gem.
4 Answers
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Looping in a spiral
A friend was in need of an algorithm that would let him loop through the elements of an NxM matrix (N and M are odd). I came up with a solution, but I wanted to see if my fellow SO'ers could come up with a better solution.
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