Perl unshift Function

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Description

This function places the elements from LIST, in order, at the beginning of ARRAY. This is opposite function to shift().

Syntax

Following is the simple syntax for this function:

unshift ARRAY, LIST

Return Value

This function returns the number of new elements in ARRAY.

Example

Following is the example code showing its basic usage:

#!/usr/bin/perl -w

@array  = ( 1, 2, 3, 4);

print "Value of array is @array\n" ;

unshift( @array, 20, 30, 40 );

print "Now value of array is @array\n" ;

When above code is executed, it produced following result

Value of array is 1 2 3 4
Now value of array is 20 30 40 1 2 3 4


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