Ruby 3 · Errors and files
Use a Set
A collection of unique values with fast membership tests.
require "set"
seen = Set.new
seen << 1 << 2 << 1
puts seen.size
Ruby 3 · Errors and files
A collection of unique values with fast membership tests.
require "set"
seen = Set.new
seen << 1 << 2 << 1
puts seen.size
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