1 module ActiveSupport
#:nodoc:
2 module CoreExtensions
#:nodoc:
5 # Returns a hash that represents the difference between two hashes.
9 # {1 => 2}.diff(1 => 2) # => {}
10 # {1 => 2}.diff(1 => 3) # => {1 => 2}
11 # {}.diff(1 => 2) # => {1 => 2}
12 # {1 => 2, 3 => 4}.diff(1 => 2) # => {3 => 4}
14 self.dup
.delete_if
{ |k
, v
| h2
[k
] == v
}.merge(h2
.dup
.delete_if
{ |k
, v
| self.has_key
?(k
) })