Here’s a refactoring example for a simple Ruby math problem using the
injectmethod.The goal is to generate an n by n multiplication matrix. Pretty straightforward. Let’s make a first pass:
def multiplication_table(n) results = [] (1..n).each do |row_index| row = [] (1..n).each {...
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Functional programming patterns are awesome for this kind of problem. I had a job interview two months ago where I was...
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