Pefer .reduce over .inject

As per https://github.com/bbatsov/ruby-style-guide#map-fine-select-reduce-size
thirtysixthspan · Oct 27, 2014 · 83e4f1f · 83e4f1f
1 parent 560cf50
commit 83e4f1f
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diff --git a/lib/descriptive_statistics/sum.rb b/lib/descriptive_statistics/sum.rb
@@ -3,6 +3,6 @@ def sum(collection = self)
     values = Support::convert(collection)
     return DescriptiveStatistics.sum_empty_collection_default_value if values.empty?
 
-    return values.inject(:+)
+    return values.reduce(:+)
   end
 end
diff --git a/lib/descriptive_statistics/variance.rb b/lib/descriptive_statistics/variance.rb
@@ -4,6 +4,6 @@ def variance(collection = self)
     return DescriptiveStatistics.variance_empty_collection_default_value if values.empty?
 
     mean = values.mean
-    values.map { |sample| (mean - sample) ** 2 }.inject(:+) / values.number
+    values.map { |sample| (mean - sample) ** 2 }.reduce(:+) / values.number
   end
 end