BigDecimal Ruby on Rails 5.1.2 Class BigDecimal < Object activesupport/lib/active_support/core_ext/object/duplicable.rb activesupport/lib/active_support/core_ext/object/json.rb Methods D duplicable? Instance Public methods duplicable?() Link BigDecimals are duplicable: BigDecimal.new(“1.2”).duplicable? # => true BigDecimal.new(“1.2”).dup # => #<BigDecimal:…,'0.12E1',18(18)> Source: show | on GitHub # File activesupport/lib/active_support/core_ext/object/duplicable.rb, line 111 def duplicable? true end