Class: Range

### Home Classes Methods

### In Files

- lib/active_support/core_ext/enumerable.rb
- lib/active_support/core_ext/range/blockless_step.rb
- lib/active_support/core_ext/range/conversions.rb
- lib/active_support/core_ext/range/cover.rb
- lib/active_support/core_ext/range/include_range.rb
- lib/active_support/core_ext/range/overlaps.rb

### Parent

Object

### Methods

- #include_with_range?
- #overlaps?
- #step_with_blockless
- #to_default_s
- #to_formatted_s
- #to_s

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# Range

### Constants

RANGE_FORMATS

### Public Instance Methods

include_with_range?(value) click to toggle source

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

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

The native Range#include? behavior is untouched.

    ("a".."f").include?("c") # => true
    (5..9).include?(11) # => false

    # File lib/active_support/core_ext/range/include_range.rb, line 10
    def include_with_range?(value)
      if value.is_a?(::Range)
        # 1...10 includes 1..9 but it does not include 1..10.
        operator = exclude_end? && !value.exclude_end? ? :< : :<=
        include_without_range?(value.first) && value.last.send(operator, last)
      else
        include_without_range?(value)
      end
    end

overlaps?(other) click to toggle source

Compare two ranges and see if they overlap each other

    (1..5).overlaps?(4..6) # => true
    (1..5).overlaps?(7..9) # => false

    # File lib/active_support/core_ext/range/overlaps.rb, line 5
    def overlaps?(other)
      include?(other.first) || other.include?(first)
    end

step_with_blockless(*args, &block) click to toggle source

Return an array when step is called without a block.

    # File lib/active_support/core_ext/range/blockless_step.rb, line 9
    def step_with_blockless(*args, &block)
      if block_given?
        step_without_blockless(*args, &block)
      else
        array = []
        step_without_blockless(*args) { |step| array << step }
        array
      end
    end

to_default_s(format = :default) click to toggle source
Alias for: to_s
to_formatted_s(format = :default) click to toggle source

Gives a human readable format of the range.

#### Example

    (1..100).to_formatted_s # => "1..100"

    # File lib/active_support/core_ext/range/conversions.rb, line 11
    def to_formatted_s(format = :default)
      if formatter = RANGE_FORMATS[format]
        formatter.call(first, last)
      else
        to_default_s
      end
    end

Also aliased as: to_s
to_s(format = :default) click to toggle source
Also aliased as: to_default_s
Alias for: to_formatted_s

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