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awesome/rails-in_groups_of-padded-with-nil.rb

Created January 29, 2020 00:50
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rails in_groups_of padded with nil https://apidock.com/rails/Array/in_groups_of
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rails-in_groups_of-padded-with-nil.rb
[7] pry(#<#<Class:0x007fbefaceac00>>)> rows_per_page, items_per_row = PdfBuilder.rows_per_page_items_per_row("image_large")
=> [3, 2]
[8] pry(#<#<Class:0x007fbefaceac00>>)> array = 8.times.map(&:to_s)
=> ["0", "1", "2", "3", "4", "5", "6", "7"]
[9] pry(#<#<Class:0x007fbefaceac00>>)> array.in_groups_of(items_per_row).in_groups_of(rows_per_page)
=> [[["0", "1"], ["2", "3"], ["4", "5"]], [["6", "7"], nil, nil]]
[10] pry(#<#<Class:0x007fbefaceac00>>)> array.in_groups_of(items_per_row, []).in_groups_of(rows_per_page, [])
=> [[["0", "1"], ["2", "3"], ["4", "5"]], [["6", "7"], [], []]]
[11] pry(#<#<Class:0x007fbefaceac00>>)> array.in_groups_of(items_per_row).in_groups_of(rows_per_page, [])
=> [[["0", "1"], ["2", "3"], ["4", "5"]], [["6", "7"], [], []]]
[12] pry(#<#<Class:0x007fbefaceac00>>)> array = 8.times.map(&:to_s).in_groups_of(items_per_row,nil).in_groups_of(rows_per_page,[])
=> [[["0", "1"], ["2", "3"], ["4", "5"]], [["6", "7"], [], []]]
[13] pry(#<#<Class:0x007fbefaceac00>>)> array = 9.times.map(&:to_s).in_groups_of(items_per_row,nil).in_groups_of(rows_per_page,[])
=> [[["0", "1"], ["2", "3"], ["4", "5"]], [["6", "7"], ["8", nil], []]]
[14] pry(#<#<Class:0x007fbefaceac00>>)> array = 9.times.map(&:to_s).in_groups_of(items_per_row,nil).in_groups_of(rows_per_page, items_per_row.times.map{nil})
=> [[["0", "1"], ["2", "3"], ["4", "5"]], [["6", "7"], ["8", nil], [nil, nil]]]
[15] pry(#<#<Class:0x007fbefaceac00>>)>
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