Answer / bhavani

Hash is an associative array where data is stored in
"key"->"value" pairs.

Eg : fruits is a hash having their names and price
%fruits = ("Apple", "60", "Banana", "20", "Peers", "40");

Answer / prabhath kota

As friends said above, its otherwise called as associative
array. It has lot of advantages over perl.

Here we can keep the values in a structured way, that
structured way comes from key-value pairs.

Eg: (The syntax given above are also correct, but the below
representation is much better in look and feel)

my %hash_example = ( a => 10,
b => 20,
c => 30 );
keys : a,b,c
values : 10,20,30

Features of Hash :
##################
1) Keys should always be unique where as values may not be
unique

(Right)
my %hash_example = ( a => 10,
b => 10,
c => 10 );

(wrong)
my %hash_example = ( a => 10,
a => 20,
a => 30 );

2) keys (%hash_example) will return an array containing only
keys

my @keys = keys(%hash);

3) similary for values
my @values = keys(%values);

Answer / raghav

Hash/Associative array is the one in which all
the values are stored in terms of keys and values.

i.e., the values are indexed with the help of keys.
You cannot get back the values in a correct order as it
happens in normal array. because in this values are stored
in random positions. The only way to get in a correct order
is to sort that array.

ex: %hash = {"Name","Raghav","Age","26"};
$hash{'Name'} will give "Raghav"
$hash{'Age'} will give "26"

Answer / sam

Hash is a specific datatype in PERL and it contains KEYS
and VALUES. Values are referred with the help of keys.

Answer / savitha sridhar

Hash or "Associative Array" is an unordered list of scalar
data. The data of the hash is depicted as key and a value
pair.

Eg: %h=("kar","blr","ap","hyd","tn","che");

To print the entire hash : print %h; --returns entire hash
(the order may be different)
To print only one value : print $h{"kar"}; -->returns blr

Answer / shah faisal

Hash is an unordered pair of keys and values where keys
must be unique else the second duplicate keys replace the
value of first key. Hash is denoted by a "%" sign.
e.g.
"key1"->"value1","key2"->"value2",key1"=>"value3" then
final hash will be %hash=("key2"-
>"value2","key1"=>"value3");

What are perl array functions?

0 Answers  

explain the various functions/directives in perl that allow you to include/import a module. Also, state the differences between them.

0 Answers  

What interface used in PERL to connect to database? How do you connect to database in Perl?

0 Answers  

What do the symbols $ @ and % mean when prefixing a variable?

1 Answers   Barclays,

What does `$result = f() .. g()' really return?

0 Answers  

How to connect with sqlserver from perl and how to display database table info?

0 Answers  

Explain lists ?

0 Answers  

Is there any way to add two arrays together?

0 Answers  

What are numeric operators in perl?

0 Answers  

Write a program to show the process of spawning a child process

0 Answers  

Which of these is a difference between Perl and C++ ?

0 Answers  

Explain gmtime() function in perl?

0 Answers