Set#flatten!

flatten!

# File tmp/rubies/ruby-3.4.1/lib/set.rb, line 386
def flatten!
  replace(flatten()) if any?(Set)
end

Equivalent to Set#flatten, but replaces the receiver with the result in place. Returns nil if no modifications were made.

See also #flatten #include? #filter! #initialize_clone also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0