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Created January 6, 2020 11:28
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blogpost on new method I learned

Joining Integers, Making Strings

While working through a Ruby problem on Codewars, I discovered a way to combine an array of integers in order to work on it as a string. As an example, see the following code snippet:

[3,2,1].join # --> returns "321"

This was surprising to me. In order to get the same result, I had taken the long route:

str = ""
[3,2,1].each { |digit| string << digit.to_s }
str.to_i

With Ruby, as often is the case, there’s a lot concealed underneath the .join method, but it’s a nice little shortcut for sure. One to remember…

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