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  1. class Lists
  2. {
  3.   Void main()
  4.   {
  5.     //literals
  6.     //access
  7.     //modify
  8.     //stack
  9.     //iteration
  10.     //search
  11.     //join
  12.     //map
  13.     //reduce
  14.     //sorting
  15.     readOnly
  16.   }
  17.  
  18.  
  19.  
  20.   Void readOnly()
  21.   {
  22.     q := ["a", "b", "c"]
  23.     r := q.rw;  show(r, "rw on read/write returns this (r === q)")
  24.     s := q.ro;  show(s, "s is readonly with items in q")
  25.     t := s.ro;  show(t, "ro on readonly returns this (t === s)")
  26.     u := s.rw;  show(u, "read/write with items in s (u !== s)")
  27.     show(s.isRO,        "returns true")
  28.     show(s.isRW,        "return false")
  29.   }
  30.  
  31.   Void show(Obj? result, Str what)
  32.   {
  33.     resultStr := "" + result
  34.     if (resultStr.size > 40) resultStr = resultStr[0..40] + "..."
  35.     echo(what.padr(40) + " => " + resultStr)
  36.   }
  37.  
  38. }
Success #stdin #stdout 1.61s 106104KB
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Standard input is empty
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rw on read/write returns this (r === q)  => [a, b, c]
s is readonly with items in q            => [a, b, c]
ro on readonly returns this (t === s)    => [a, b, c]
read/write with items in s (u !== s)     => [a, b, c]
returns true                             => true
return false                             => false
https://ideone.com/9lkWrt
language:
Fantom (fantom 1.0.72)
created:
9 days ago
visibility:
public

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