method

extract!

v3.2.13 - Show latest stable - Class: Hash

extract!(*keys)

public

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

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

# File activesupport/lib/active_support/core_ext/hash/slice.rb, line 35
  def extract!(*keys)
    result = {}
    keys.each {|key| result[key] = delete(key) }
    result
  end

1Note

without a bang

freemanoid321 · Sep 8, 2013

We can use hash#slice[http://api.rubyonrails.org/classes/Hash.html#method-i-slice] if we want an Hash#extract (without bang) like behavior.

extract!

1Note

without a bang

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