Convert obj to an Integer.

As int is already an Integer, all these methods simply return the receiver.

Returns a string containing the character represented by the receiver‘s value according to encoding.

   65.chr    #=> "A"
   230.chr   #=> "\346"
   255.chr(Encoding::UTF_8)   #=> "\303\277"

Iterates block, passing decreasing values from int down to and including limit.

   5.downto(1) { |n| print n, ".. " }
   print "  Liftoff!\n"

produces:

   5.. 4.. 3.. 2.. 1..   Liftoff!

Returns true if int is an even number.

As int is already an Integer, all these methods simply return the receiver.

Always returns true.

Returns the Integer equal to int + 1.

   1.next      #=> 2
   (-1).next   #=> 0

Returns true if int is an odd number.

Returns the Integer equal to int - 1.

   1.pred      #=> 0
   (-1).pred   #=> -2

Returns the Integer equal to int + 1.

   1.next      #=> 2
   (-1).next   #=> 0

Iterates block int times, passing in values from zero to int - 1.

   5.times do |i|
     print i, " "
   end

produces:

   0 1 2 3 4

As int is already an Integer, all these methods simply return the receiver.

As int is already an Integer, all these methods simply return the receiver.

As int is already an Integer, all these methods simply return the receiver.

Iterates block, passing in integer values from int up to and including limit.

   5.upto(10) { |i| print i, " " }

produces:

   5 6 7 8 9 10