How do I check if a variable is Enumerable in Ruby?
Sometimes, you’ll have a scenario where you’ll want to check and see if something can be enumerated or not. To do this, create a method like this:
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| def is_enumerable?(object) | |
| object.is_a? Enumerable | |
| end |
To see how this works, lets pass in 2 objects - a string and a array.
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| [8] pry(main)> is_enumerable?("I'm a string") | |
| => false | |
| [9] pry(main)> is_enumerable?(["array", "of", "things"]) | |
| => true |
And there you have a simple and easy way to check if something can be enumerated on!