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instance method

Set#size

size

# File tmp/rubies/ruby-3.2.0/lib/set.rb, line 311
def size
  @hash.size
end

Returns the number of elements.

See also #select! #subset? #reset #subtract also in 4.1 · 4.0 · 3.4 · 3.3 · 3.1 · 3.0