Is there a way to compare two arrays and show what is common to both of them?
array1 = ["pig", "dog", "cat"]
array2 = ["dog", "cat", "pig", "horse"]
What do I type to show that ["pig", "dog", "cat"] are common between these two arrays?
Finding what is common to two arrays
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2 Answers
Set Intersection. Returns a new array containing elements common to the two arrays, with no duplicates, like:
["pig", "dog", "bird"] & ["dog", "cat", "pig", "horse", "horse"]
# => ["pig", "dog"]
You can also read a blog post about Array coherences
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