hashes, Perl - rextester

hashes

$data{'Hunt'} = 100;
$data{'Benji'} = 200;
$data{'Faust'} = 40;
$data{'Lane'} = 20;

%data = ('apple', 145, 'mango', 130, 'banana', 140);

%data = ('reg' => 255, 'green' => 124, 'blue' => 10);

%data = ('Aishwarya' => 85, 
	'Amipara' => 90, 
	'Anshal' => 80);

@names = keys %data;

print "$names[0]\n";
print "$names[1]\n";
print "$names[2]\n";

%data = ('Aishwarya' => 85, 
	'Amipara' => 90, 
	'Anshal' => 80);

@marks = values %data;

print "$marks[0]\n";
print "$marks[1]\n";
print "$marks[2]\n";
%data = ('Aishwarya' => 85, 
	'Amipara' => 90, 
	'Anshal' => 80);

if( exists($data{'Lisa'} ) ) {
   print "Lisa marks are $data{'Lisa'}\n";
} else {
   print "I don't know marks of Lisa\n";
}
%data = ('Aishwarya' => 85, 
	'Amipara' => 90, 
	'Anshal' => 80);
	
@keys = keys %data;
$size = @keys;
print "1 - Hash size:  is $size\n";

@values = values %data;
$size = @values;
print "2 - Hash size:  is $size\n";

%data = ('Aishwarya' => 85, 
	'Amipara' => 90, 
	'Anshal' => 80);
	
$data{'Anthony'} = 75;
delete $data{'Anshal'};


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