lib/rumanu/helpers.rb in rumanu-0.11.1 vs lib/rumanu/helpers.rb in rumanu-0.15.0

@@ -1,32 +1,25 @@
+# frozen_string_literal: true
+
 require 'date'
 module Rumanu
-
   def digit_sum(n)
-    cum = n.digits.sum
-    cum = digit_sum(cum) unless cum.to_s.length == 1
-    return cum
+    return 0 if n.zero?
+
+    1 + (n - 1) % 9
   end
 
-  def reduce_list(l,alphabet)
-    init = 0
-    l.each do |c|
-        alphabet.each do |k,v|
-            init += v if c == k
-        end
-    end
-    digit_sum(init)
+  def reduce_list(lst, alphabet)
+    digit_sum(lst.map { |value| alphabet[value] }.compact.sum)
   end
 
   def valid_date?(str)
-    valid_formats = [/\d{2}\.\d{2}\.\d{4}/, /\d{2}\/\d{2}\/\d{4}/, /\d{2}-\d{2}-\d{4}/, /\d{4}-\d{2}-\d{2}/]
-    check_format = valid_formats.map { |f| f.match?(str) && 1 || 0}.reduce(0,:+)
-    raise ArgumentError.new("Incorrect date format") if check_format.zero?
+    valid_formats = [/\d{2}\.\d{2}\.\d{4}/, %r{\d{2}/\d{2}/\d{4}}, /\d{2}-\d{2}-\d{4}/, /\d{4}-\d{2}-\d{2}/]
+    check_format = valid_formats.map { |f| f.match?(str) && 1 || 0 }.reduce(0, :+)
+    raise ArgumentError, 'Incorrect date format' if check_format.zero?
   end
 
   def valid_hash?(h)
-    raise ArgumentError.new("Object must me a Hash") unless h.is_a? Hash
-    raise ArgumentError.new("Hash can not be empty") unless h.empty? true
-
+    raise ArgumentError, 'Object must me a Hash' unless h.is_a? Hash
+    raise ArgumentError, 'Hash can not be empty' unless h.empty? true
   end
-
 end