diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/object/duplicable.rb | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/duplicable.rb b/activesupport/lib/active_support/core_ext/object/duplicable.rb index ebe31b38ca..9485e74816 100644 --- a/activesupport/lib/active_support/core_ext/object/duplicable.rb +++ b/activesupport/lib/active_support/core_ext/object/duplicable.rb @@ -73,7 +73,8 @@ end class Symbol begin - :symbol.dup + :symbol.dup # Ruby 2.4.x. + 'symbol_from_string'.to_sym.dup # Some symbols can't `dup` in Ruby 2.4.0. rescue TypeError # Symbols are not duplicable: @@ -121,3 +122,23 @@ class Method false end end + +class Complex + # Complexes are not duplicable: + # + # Complex(1).duplicable? # => false + # Complex(1).dup # => TypeError: can't copy Complex + def duplicable? + false + end +end + +class Rational + # Rationals are not duplicable: + # + # Rational(1).duplicable? # => false + # Rational(1).dup # => TypeError: can't copy Rational + def duplicable? + false + end +end |