diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/object/duplicable.rb')
-rw-r--r-- | activesupport/lib/active_support/core_ext/object/duplicable.rb | 15 |
1 files changed, 14 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 9cd7485e2e..665cb0f96d 100644 --- a/activesupport/lib/active_support/core_ext/object/duplicable.rb +++ b/activesupport/lib/active_support/core_ext/object/duplicable.rb @@ -19,7 +19,7 @@ class Object # Can you safely dup this object? # - # False for +nil+, +false+, +true+, symbol, and number objects; + # False for +nil+, +false+, +true+, symbol, number and BigDecimal(in 1.9.x) objects; # true otherwise. def duplicable? true @@ -78,6 +78,9 @@ end require 'bigdecimal' class BigDecimal + # Needed to support Ruby 1.9.x, as it doesn't allow dup on BigDecimal, instead + # raises TypeError exception. Checking here on the runtime whether BigDecimal + # will allow dup or not. begin BigDecimal.new('4.56').dup @@ -88,3 +91,13 @@ class BigDecimal # can't dup, so use superclass implementation end end + +class Method + # Methods are not duplicable: + # + # method(:puts).duplicable? # => false + # method(:puts).dup # => TypeError: allocator undefined for Method + def duplicable? + false + end +end |