method

in_groups_of

v1.2.6 - Show latest stable - 0 notes - Class: ActiveSupport::CoreExtensions::Array::Grouping

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What's this?

in_groups_of(number, fill_with = nil, &block) public

Iterate over an array in groups of a certain size, padding any remaining slots with specified value (nil by default) unless it is false.

E.g.

  %w(1 2 3 4 5 6 7).in_groups_of(3) {|g| p g}
  ["1", "2", "3"]
  ["4", "5", "6"]
  ["7", nil, nil]

  %w(1 2 3).in_groups_of(2, '&nbsp;') {|g| p g}
  ["1", "2"]
  ["3", "&nbsp;"]

  %w(1 2 3).in_groups_of(2, false) {|g| p g}
  ["1", "2"]
  ["3"]

Show source

# File activesupport/lib/active_support/core_ext/array/grouping.rb, line 23
        def in_groups_of(number, fill_with = nil, &block)
          require 'enumerator'
          collection = dup
          collection << fill_with until collection.size.modulo(number).zero? unless fill_with == false
          grouped_collection = [] unless block_given?
          collection.each_slice(number) do |group|
            block_given? ? yield(group) : grouped_collection << group
          end
          grouped_collection unless block_given?
        end

in_groups_of

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