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  1. or download this
    perl -we "my %hash = @ARGV" Andy 1995 Sarah 1990 Sam 1992 UNEXPECTED

Odd number of elements in hash assignment at -e line 1.
  2. or download this
    @ARGV = qw( Andy 1995 Sarah 1990 Sam 1992 UNEXPECTED );
my %hash;
...

# hash is: ("Sam", 1992, "Andy", 1995, "Sarah", 1990)
  3. or download this
    use strict;
use warnings;
...
Odd number of elements in pairs at -e line 1.
# hash is: ("Sarah", 1990, "Andy", 1995, "UN", undef, "Sam", 1992)