Use each_byte to significantly reduce memory requirements

Author: yegct

lib/bitarray-array.rb

@@ -45,6 +45,6 @@ def each_byte
   # Returns the total number of bits that are set
   # (The technique used here is about 6 times faster than using each or inject direct on the bitfield)
   def total_set
-    @field.inject(0) { |a, byte| a += byte & 1 and byte >>= 1 until byte == 0; a }
+    @field.each_byte.inject(0) { |a, byte| a += byte & 1 and byte >>= 1 until byte == 0; a }
   end
 end

lib/bitarray.rb

@@ -49,7 +49,7 @@ def each_byte
   # Returns the total number of bits that are set
   # (The technique used here is about 6 times faster than using each or inject direct on the bitfield)
   def total_set
-    @field.bytes.inject(0) { |a, byte| a += byte & 1 and byte >>= 1 until byte == 0; a }
+    @field.each_byte.inject(0) { |a, byte| a += byte & 1 and byte >>= 1 until byte == 0; a }
   end
 
   def byte_position(position)

test/test_bitarray.rb

@@ -1,5 +1,5 @@
 require "minitest/autorun"
-require "bitarray"
+require_relative "../lib/bitarray"
 
 class TestBitArray < Minitest::Test
   def setup