var tup01 = ( 123, "abc" )  # tuple with unnamed items;
var tup02 = ( index = 123, "abc" )  # first item is named as "index";
var tup03 = tuple{ 123, name = "abc" }

io.writeln( tup01, tup02, tup03 )


var tup11 : tuple<int,int> = (1, 2)
var tup12 : tuple<index:int,name:string> = (123, "abc")
var tup13 : tuple<int,int,...> = (1, 2, 3, "abc")

io.writeln( tup11, tup12, tup13 )
io.writeln( "number of items:", %tup13 )