exemplo de closure read-only

leobragatti · Dec 17, 2011 · cd29bdc · cd29bdc
1 parent 00541c2
commit cd29bdc
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/funcional/roman_closure.py b/funcional/roman_closure.py
@@ -0,0 +1,19 @@
+
+def to_roman():
+
+    romanNumeralMap = (
+        ('M',  1000), ('CM', 900), ('D',  500), ('CD', 400), ('C',  100), ('XC', 90),
+        ('L',  50), ('XL', 40), ('X',  10), ('IX', 9), ('V',  5), ('IV', 4), ('I',  1))
+
+    def _to_roman(n):
+        result = ''
+        for numeral, integer in romanNumeralMap:
+            while n >= integer:
+                result += numeral
+                n -= integer
+        return result
+    return _to_roman
+
+to_roman = to_roman()
+for i in range(1, 21):
+    print to_roman(i)