Perl Array Functions
The Perl array functions are one of the most important category of the built-in Perl functions. As you know, three data types are available in the Perl language: scalars, arrays and hashes. A scalar, which represents the fundamental type of Perl data, can be a string, a number or a reference. When you group together two or more scalars, you have a list. If you want to refer a list throughout a Perl script, you need an array variable, represented in Perl by an identifier preceded by the @ symbol. If some of the elements of an array are references to other arrays or structures, we say that we have a multidimensional array.
The Perl language supplies a lot of functions to manipulate arrays. Every time you call a Perl array function, you must distinguish between a simple array and a multidimensional one. For instance, if you have an array which has as elements references to other arrays or hashes and if you want to delete all its elements, you need to step down through all its sub-arrays and delete their elements too.
Follow the below links to see how to use the Perl array functions. | pop | removes and returns the last element of an array; the size of the array decreases by 1 | | push | appends the elements of a list to an array; the size of the array increases by the size of the list | | shift | removes and returns the first element of an array, reducing the number of the array elements by one | | splice | removes a subarray from an array and eventually replaces it with another array | | unshift | inserts a value or a list of values at the beginning of an array and returns the new total number of the array’s elements |
Table of Contents:
A Perl Script
Install Perl
Running Perl
Perl Data Types
Perl Variables
Perl Operators
Perl Lists
Perl Arrays
Array Size
Array Length
Perl Hashes
Perl Statements
Perl if
Perl unless
Perl switch
Perl while
Perl do-while
Perl until
Perl do-until
Perl for
Perl foreach
Built-in Perl Functions
Functions by Category
String Functions
Regular Expressions and Pattern Matching
List Functions
Array Functions (more)
Hash Functions
Miscellaneous Functions
Functions in alphabetical order
chomp
chop
chr
crypt
defined
delete
each
exists
grep
hex
index
join
keys
lc
lcfirst
length
map
oct
ord
pack
pop
push
q
qq
qw
reverse
rindex
scalar
shift
sort
splice
split
sprintf
substr
tr
uc
ucfirst
undef
unpack
unshift
values
return from Perl Array Functions to Perl Basics
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