Set#size

() -> ::Integer

size

# File tmp/rubies/ruby-3.4.1/lib/set.rb, line 301
def size
  @hash.size
end

Returns the number of elements.

See also #select! #subset? #reset #subtract also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0