io.sheet

  Basic Math
  
  Io> 1+1
  ==> 2
  
  Io> 2 sin
  ==> 0.909297
  
  Io> 2 sqrt
  ==> 1.414214
  Variables
  Io> a := 1
  ==> 1
  
  Io> a
  ==> 1
  
  Io> b := 2 * 3
  ==> 6
  
  Io> a + b
  ==> 7
  
  
  Conditions
  Io> a := 2
  
  Io> if(a == 1) then(writeln("a is one")) else(writeln("a is not one"))
  a is not one
  
  Io> if(a == 1, writeln("a is one"), writeln("a is not one"))
  a is not one
  Lists
  Io> d := List clone append(30, 10, 5, 20)    
  ==> list(30, 10, 5, 20)   
  
  Io> d size
  ==> 4
  
  Io> d print
  ==> list(30, 10, 5, 20)
  
  Io> d := d sort
  ==> list(5, 10, 20, 30)
  
  Io> d first
  ==> 5
  
  Io> d last
  ==> 30
  
  Io> d at(2)
  ==> 20
  
  Io> d remove(30)
  ==> list(5, 10, 20)
  
  Io> d atPut(1, 123)
  ==> list(5, 123, 20)
  
  
  Loops
  Io> for(i, 1, 10, write(i, " "))
  1 2 3 4 5 6 7 8 9 10 
  
  Io> d foreach(i, v, writeln(i, ": ", v))
  0: 5
  1: 123
  3: 20
  
  
  Strings
  Io> a := "foo"
  ==> "foo"
  
  Io> b := "bar"
  ==> "bar"
  
  Io> c := a .. b
  ==> "foobar"
  
  Io> c at(0)
  ==> 102
  
  Io> c at(0) asCharacter
  ==> "f"
  
  Io> s := "this is a test"
  ==> "this is a test"
  
  Io> words := s split(" ", "\t") print
  "this", "is", "a", "test"
  
  Io> s findSeq("is")
  ==> 2
  
  Io> s findSeq("test")
  ==> 10
  
  Io> s slice(10)
  ==> "test"
  
  Io> s slice(2, 10)
  ==> "is is a "