End of Life Ruby 3.2 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Racc::ISet#include?

include?(key)

# File tmp/rubies/ruby-3.2.0/lib/racc/iset.rb, line 28
def [](key)
  @set[key.ident]
end

Alias of #[]

See also #[] #empty? #inspect #each also in 3.1 · 3.0