Variables
List Range Operator
- Since it is common to reference a range of values (either as data
values or as index values), Perl defines a special list range operator
".." to simplify the specification of such a range
- The ".." operator is used as an infix operator placed
between any two scalar values
- Perl will interpolate the (quantized "in between") values automatically
( 1..5 ) # Yields ( 1, 2, 3, 4, 5 )
( 1.3..6.1 ) # Yields ( 1.3, 2.3, 3.3, 4.3, 5.3 )
( 2..6, 10, 12 ) # Yields ( 2, 3, 4, 5, 6, 10, 12 )
( "a".."z" ) # Yields ( "a", "b", "c", ..., "z" ) Nice.
( "a1".."e9" ) # Yields ( "a1", "a2", ..., "e9" ) Wow!
