instance method `extract!`

Ruby on Rails 6.1.7.10

Since v3.0.20

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

extract!(*keys)

Removes and returns the key/value pairs matching the given keys.

hash = { a: 1, b: 2, c: 3, d: 4 }
hash.extract!(:a, :b) # => {:a=>1, :b=>2}
hash                  # => {:c=>3, :d=>4}

Parameters

keys rest

Source

# File activesupport/lib/active_support/core_ext/hash/slice.rb, line 24
  def extract!(*keys)
    keys.each_with_object(self.class.new) { |key, result| result[key] = delete(key) if has_key?(key) }
  end

Defined in activesupport/lib/active_support/core_ext/hash/slice.rb line 24 · View on GitHub · Improve this page · Find usages on GitHub

Defined in Hash

Signature

Parameters