method

in_groups_of

v4.1.8 - Show latest stable - 0 notes - Class: Array

in_groups_of(number, fill_with = nil) public

Splits or iterates over the array in groups of size number, padding any remaining slots with fill_with unless it is false.

%w(1 2 3 4 5 6 7 8 9 10).in_groups_of(3) {|group| p group} ["1", "2", "3"] ["4", "5", "6"] ["7", "8", "9"] ["10", nil, nil] %w(1 2 3 4 5).in_groups_of(2, '&nbsp;') {|group| p group} ["1", "2"] ["3", "4"] ["5", "&nbsp;"] %w(1 2 3 4 5).in_groups_of(2, false) {|group| p group} ["1", "2"] ["3", "4"] ["5"]

Show source

# File activesupport/lib/active_support/core_ext/array/grouping.rb, line 20 def in_groups_of(number, fill_with = nil) if fill_with == false collection = self else # size % number gives how many extra we have; # subtracting from number gives how many to add; # modulo number ensures we don't add group of just fill. padding = (number - size % number) % number collection = dup.concat(Array.new(padding, fill_with)) end if block_given? collection.each_slice(number) { |slice| yield(slice) } else collection.each_slice(number).to_a end end

in_groups_of

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