Added support to sort tabular data.

README.md

@@ -161,3 +161,12 @@ mined.to_a
 The first entry is the header row.
 Subsequent entries are data rows.
 The last value in each data row indicates the number of matches.
+
+Need to sort the rows? Just pass a `sort_by` block.
+
+```ruby
+# sort on "total" i.e. 3rd value in the row
+mined.to_a do |row|
+  row[2]
+end
+```

lib/goldmine/hash_miner.rb

@@ -79,13 +79,15 @@ def pivoted_keys
 
     # Returns pivoted data as a tabular Array that can be used to build CSVs or user interfaces.
     # @return [Array] Tabular pivot data
-    def to_a
+    # @yield [Array] sort_by block for sorting the Array
+    def to_a(&block)
       rows = map do |pair|
         [].tap do |row|
           row.concat pair.first.values
           row << pair.last.size
         end
       end
+      rows = rows.sort_by(&block) if block_given?
       header = pivoted_keys.map(&:to_s) << "total"
       rows.insert 0, header
       rows

lib/goldmine/version.rb

@@ -1,3 +1,3 @@
 module Goldmine
-  VERSION = "1.1.1"
+  VERSION = "1.1.2"
 end

test/test_goldmine.rb

@@ -67,8 +67,14 @@ class TestGoldmine < PryTest::Test
       record[:age] >= 21
     end
 
-    expected = [["Name has an 'e'", ">= 21 years old", "total"], [false, true, 2], [true, true, 2], [true, false, 1]]
-    assert mined.to_a == expected
+    expected = [["Name has an 'e'", ">= 21 years old", "total"], [true, false, 1], [false, true, 2], [true, true, 2]]
+
+    # block is sort_by
+    tabular_data = mined.to_a do |row|
+      [row[2], row[0] ? 1 : 0, row[1] ? 1 : 0]
+    end
+
+    assert tabular_data == expected
   end
 
   test "source_data" do