class MetricFu::Grouping
Public Class Methods
new(table, opts)
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# File lib/base/grouping.rb, line 9 def initialize(table, opts) column_name = opts.fetch(:by) order = opts.fetch(:order) { nil } hash = {} if column_name.to_sym == :metric # special optimized case hash = table.group_by_metric else table.each do |row| hash[row[column_name]] ||= Table.new(:column_names => row.attributes) hash[row[column_name]] << row end end if order @arr = hash.sort_by &order else @arr = hash.to_a end end
Public Instance Methods
[](key)
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# File lib/base/grouping.rb, line 28 def [](key) @arr.each do |group_key, table| return table if group_key == key end return nil end
each() { |value, rows| ... }
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# File lib/base/grouping.rb, line 35 def each @arr.each do |value, rows| yield value, rows end end