length

• Class methods (2)
• []
• new
• Instance methods (65)
• ^
• <
• <<
• <=
• ==
• === (>= v2_5_5)
• >
• >=
• |
• -
• &
• +
• add
• add?
• classify
• clear
• collect!
• compare_by_identity (>= v2_4_6)
• compare_by_identity? (>= v2_4_6)
• delete
• delete?
• delete_if
• difference
• disjoint?
• divide
• do_with_enum
• each
• empty?
• eql?
• filter! (>= v2_6_3)
• flatten
• flatten!
• flatten_merge
• freeze
• hash
• include?
• initialize_clone (>= v2_2_9)
• initialize_copy
• initialize_dup (>= v2_2_9)
• inspect
• intersect?
• intersection
• keep_if
• length
• map!
• member?
• merge
• pretty_print
• pretty_print_cycle
• proper_subset?
• proper_superset?
• reject!
• replace
• reset (>= v2_5_5)
• select!
• size
• subset?
• subtract
• superset?
• taint
• to_a
• to_s (>= v2_5_5)
• to_set
• union
• untaint

= private
= protected