| instance methods | 
| chr | int.chr -> aString | 
 | Returns a string containing the ASCII character represented by 
      the receiver's value. 
  | 65.chr | » | "A" |  
  | ?a.chr | » | "a" |  
  | 230.chr | » | "\346" |  | | downto | int.downto( anInteger ) {| i | block }
        -> int | 
 | Iterates block, passing decreasing values
      from int down to and including anInteger. produces:| 
5.downto(1) { |n| print n, ".. " }
print "  Liftoff!\n"
 | 
 | 
5.. 4.. 3.. 2.. 1..   Liftoff!
 | 
 | | integer? | int.integer? -> true | 
 | Always returns true. | | next | int.next -> anInteger | 
 | Returns the Integerequal to int + 1. | | step | int.step( endNum, step ) {| i | block }
        -> int | 
 | Invokes block with the sequence of numbers starting at
      int,      
      incremented by step on each call. The loop
      finishes when the value to be passed to the block is greater
      than endNum (if step is positive) or less than
      endNum (if step is negative). produces:| 
1.step(10, 2) { |i| print i, " " }
 | 
 | | succ | int.succ -> anInteger | 
 | Synonym for Integer#next. | | times | int.times {| i | block }
        -> int | 
 | Iterates block int times, passing in values from zero to
      int - 1. produces:| 
5.times do |i|
  print i, " "
end
print "\n"
 | 
 | | upto | int.upto( anInteger ) {| i | block }
        -> int | 
 | Iterates block, passing in integer values from
      int up to and including anInteger. produces:| 
5.upto(10) { |i| print i, " " }
 | 
 |