method

extract!

v7.1.3.4 - Show latest stable - 0 notes - Class: Array

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What's this?

extract!() public

Removes and returns the elements for which the block returns a true value. If no block is given, an Enumerator is returned instead.

numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
odd_numbers = numbers.extract! { |number| number.odd? } # => [1, 3, 5, 7, 9]
numbers # => [0, 2, 4, 6, 8]

Show source

# File activesupport/lib/active_support/core_ext/array/extract.rb, line 10
  def extract!
    return to_enum(:extract!) { size } unless block_given?

    extracted_elements = []

    reject! do |element|
      extracted_elements << element if yield(element)
    end

    extracted_elements
  end

extract!

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