| Module | ActiveSupport::CoreExtensions::Hash::Diff |
| In: |
vendor/rails/activesupport/lib/active_support/core_ext/hash/diff.rb
|
Returns a hash that represents the difference between two hashes.
Examples:
{1 => 2}.diff(1 => 2) # => {}
{1 => 2}.diff(1 => 3) # => {1 => 2}
{}.diff(1 => 2) # => {1 => 2}
{1 => 2, 3 => 4}.diff(1 => 2) # => {3 => 4}
# File vendor/rails/activesupport/lib/active_support/core_ext/hash/diff.rb, line 13
13: def diff(h2)
14: self.dup.delete_if { |k, v| h2[k] == v }.merge(h2.dup.delete_if { |k, v| self.has_key?(k) })
15: end