fork download
copy 
  1. # Swift's closure
  2. #   https://d...content-available-to-author-only...e.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/Closures.html
  3.  
  4.  
  5. def __unfoldl_string_rec__(b, f):
  6.     pair = f(b)
  7.  
  8.     if pair is None:
  9.         return ""
  10.     else:
  11.         a, b1 = pair
  12.  
  13.         return unfoldl_string(b1, f) + a
  14.  
  15.  
  16. def __unfoldl_string_while__(b, f):
  17.     s    = ""
  18.     pair = f(b)
  19.  
  20.     while not(pair is None):
  21.         a, b1 = pair
  22.  
  23.         s    += a
  24.         pair = f(b1)
  25.  
  26.     return s
  27.  
  28.  
  29. # unfoldl_string = __unfoldl_string_rec__
  30. unfoldl_string   = __unfoldl_string_while__
  31.  
  32.  
  33. digitNames = {
  34.     0: "Zero", 1: "One", 2: "Two",   3: "Three", 4: "Four",
  35.     5: "Five", 6: "Six", 7: "Seven", 8: "Eight", 9: "Nine"
  36. }
  37. numbers = [16, 58, 510]
  38.  
  39.  
  40. def number_to_string(number):
  41.     return unfoldl_string(
  42.         number,
  43.         lambda num:
  44.                 None
  45.             if num <= 0 else
  46.                 (digitNames[num % 10], num / 10)
  47.     )
  48. strings = [number_to_string(number) for number in numbers]
  49.  
  50.  
  51. for s in strings:
  52.     print(s)
Success #stdin #stdout 0.01s 7852KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
SixOne
EightFive
ZeroOneFive
https://ideone.com/vpTBlR
language:
Python (cpython 2.7.16)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!