- Trending Categories
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Extracting Keys and Values from Hash in Perl
You can get a list of all of the keys from a hash in Perl by using keys function, which has the following syntax −
keys %HASH
This function returns an array of all the keys of the named hash. Following is the example −
Example
#!/usr/bin/perl
%data = ('John Paul' => 45, 'Lisa' => 30, 'Kumar' => 40);
@names = keys %data;
print "$names[0]\n";
print "$names[1]\n";
print "$names[2]\n";Output
This will produce the following result −
Lisa John Paul Kumar
Similarly, you can use values function to get a list of all the values. This function has the following syntax −
Syntax
values %HASH
This function returns a normal array consisting of all the values of the named hash. Following is the example −
Example
#!/usr/bin/perl
%data = ('John Paul' => 45, 'Lisa' => 30, 'Kumar' => 40);
@ages = values %data;
print "$ages[0]\n";
print "$ages[1]\n";
print "$ages[2]\n";Output
This will produce the following result −
30 45 40
Updated on: 29-Nov-2019
2K+ Views
Advertisements