method

cover?

v6.0.0 - Show latest stable - Class: ActiveSupport::CompareWithRange

cover?(value)

public

Extends the default Range#cover? to support range comparisons.

(1..5).cover?(1..5)  # => true
(1..5).cover?(2..3)  # => true
(1..5).cover?(1...6) # => true
(1..5).cover?(2..6)  # => false

The native Range#cover? behavior is untouched.

('a'..'f').cover?('c') # => true
(5..9).cover?(11) # => false

# File activesupport/lib/active_support/core_ext/range/compare_range.rb, line 56
    def cover?(value)
      if value.is_a?(::Range)
        # 1...10 covers 1..9 but it does not cover 1..10.
        # 1..10 covers 1...11 but it does not cover 1...12.
        operator = exclude_end? && !value.exclude_end? ? :< : :<=
        value_max = !exclude_end? && value.exclude_end? ? value.max : value.last
        super(value.first) && value_max.send(operator, last)
      else
        super
      end
    end

cover?

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