Types of attribute and then describe it.
Answer / mahesh
use Attribute::Types;
my $count : INTEGER; # Can only store an integer
my $date : INTEGER(1..31); # Can only store an int
between 1..31
my $value : NUMBER; # Can only store a number
my $score : NUMBER(0.1..9.9); # Can only store a num
between 0.1..9.9
my @rain : NUMBER; # Elements can only
store numbers
my %vars : SCALAR; # Entries can only
store scalar refs
my %handler : CODE; # Entries can only
store sub refs
my $arr : ARRAY; # Can only store array ref
my @hashes : HASH; # Elements can only
store hash refs
my $glob : GLOB; # Can only store a
typeglob ref
my $pattern : REGEX; # Can only store a qr'd
regex
my $ref2 : REF; # Can only store a
meta-reference
my $obj : Type(My::Class); # Can only store
objects of (or
# derived from) the
specified class
my $x : Type(/good|bad|ugly/); # Can only store
strings matching
# the specified regex
sub odd { no warnings; $_[0]%2 }
my $guarded : Type(&odd); # Can only store values
for which
# odd($value) returns true
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