//  ForeachDemo.swift  Copyright (c) Kari Laitinen

//  http://www.naturalprogramming.com

//  2014-09-29  File created.
//  2016-08-11  Last modification.

//  This program demonstrates the use of foreach loops that can be
//  used to go through all items in a collection (e.g. an array).

//  The foreach loop in Swift is called for-in loop.

//  Swift no longer supports a C-style for loop.

import Foundation

// The two arrays defined below are immutable arrays as they are
// specified with keyword let.

let  array_of_integers  =  [ 33, 444, 55, 6, 777 ]

let  array_of_strings  =  [ "January", "February", "March" ]

print( "\n\n array_of_integers printed using an index variable:\n" )

for integer_index  in  0 ... array_of_integers.count - 1
{
   print( "  "  +  String( array_of_integers[ integer_index ] ),
          terminator: "" )
}

print( "\n\n array_of_integers printed with a proper for-in loop:\n" )

for integer_to_print in array_of_integers 
{
   print( "  "  +  String( integer_to_print ), terminator: "" )
}

print( "\n\n array_of_strings printed with an index variable:\n" )

for string_index  in  0 ... array_of_strings.count - 1
{
   print( "  "  +  array_of_strings[ string_index ], terminator: "" )
}

print( "\n\n array_of_strings printed with a proper for-in loop:\n" )

for  string_to_print in array_of_strings
{
   print( "  "  +  string_to_print, terminator: "" )
}

print( "\n\n" )