Today I Learned

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Count Occurrences in Ruby

Ruby has a new-ish method to count occurrences in an array. So since ruby 2.7.0 you can use the Enum tally to do:

["a", "b", "c", "b"].tally
# => {"a"=>1, "b"=>2, "c"=>1}

Here's a similar function in Elixir

See More #ruby TILs
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