method

diff

Ruby on Rails latest stable (v7.1.3.2) - 0 notes - Class: Hash

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1
2.3.8
3.0.0 (0)
3.0.9 (-2)
3.1.0 (0)
3.2.1 (0)
3.2.8 (0)
3.2.13 (0)
4.0.2 (-2)
4.1.8
4.2.1
4.2.7
4.2.9
5.0.0.1
5.1.7
5.2.3
6.0.0
6.1.3.1
6.1.7.7
7.0.0
7.1.3.2
7.1.3.4
What's this?

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v4.0.2) is shown here.

These similar methods exist in v7.1.3.2:

Rails::Command::CredentialsCommand#diff

diff(other) public

Returns a hash that represents the difference between two hashes.

{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}

Show source

# File activesupport/lib/active_support/core_ext/hash/diff.rb, line 8
  def diff(other)
    ActiveSupport::Deprecation.warn "Hash#diff is no longer used inside of Rails, and is being deprecated with no replacement. If you're using it to compare hashes for the purpose of testing, please use MiniTest's assert_equal instead."
    dup.
      delete_if { |k, v| other[k] == v }.
      merge!(other.dup.delete_if { |k, v| has_key?(k) })
  end

diff

Related methods

Method deprecated or moved