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How to understand nil vs. empty vs. blank in Ruby

I find myself repeatedly looking for a clear definition of the differences of nil?, blank?, and empty? in Ruby on Rails. Here’s the ...

April 14, 2022
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How to call shell commands from Ruby

How do I call shell commands from inside of a Ruby program? How do I then get output from these commands back into ...

April 14, 2022
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How to check if a value exists in an array in Ruby

I have a value 'Dog' and an array...

April 13, 2022
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How to write a switch statement in Ruby

How do I write a switch statement in Ruby? 2 27 Ruby uses the case expression instead. case x when 1..5 "It's between ...

April 10, 2022
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