Perl | each() Function

This function returns a Two-element list consisting of the key and value pair for the next element of a hash when called in List context, so that you can iterate over it. Whereas it returns only the key for the next element of the hash when called in scalar context.

Syntax: each MY_HASH
Parameter:
MY_HASH is passed as a parameter to this function

Returns:
A 2-element list of key-value pairs for the List context whereas only the key for the scalar context.



Example 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

#!/usr/bin/perl
  
# Initializing a Hash
%hash = (Geeks => 1, of => 2 , Geek => 3);
  
# each() function
while (($key, $value) = each(%hash))
{
      
    # Printing(key, value) pair
    print("$key = $value\n");
}

chevron_right


Output:

Geek = 3
of = 2
Geeks = 1

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

#!/usr/bin/perl
  
# Initializing a Hash
%hash = (Geeks, of, Geek);
  
# each() function for scalar context
while (($key) = each(%hash))
{
      
    # Printing(key)
    print("$key ");
}

chevron_right


Output:

Geek Geeks


My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.