Perl - Lists

Lists - Perl module P208

A list is a collection of scalars. If you know any other programming languages, you might think this sounds like an array. It does Ð it can do everything that an array can do, and much more too.

This topic is presented on public courses Perl Programming, Perl bootcamp

Examples from our training material

404h	Exercise answer - looking for all "404" accesses from certain hosts
404hunter	Look for all "error 404" pages from certain hosts.
booklook	chomp, grep, split, unshift and join example
c1	Context, and splitting a list into named scalars
cont2	List, scalar and double quote contexts
context	context demonstration
dmore	dicey list sample answer
dow	Anonymous list example
fanlist	List functions such as chomp and push in use
li1	First example of a list
li2	looping through a list
linelen	Using a list to count records of various lengths
odd	Shuffling a list
prog.pl	Iterating through a list
prog2.pl	mapping a list, iterating a list with your own counter
sal2	Context examples
salad	setting up lists, looping through lists, list slices
vgrep	Verbose grep - illustration of list slices

Opentalk forum discussions related to this topic

Using Grep to search through an array
Operating on every scalar in a list
How to split a file but not line by line
Context

Pictures

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With a Perl class in Saudi Arabia

Background information

Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from http://www.training-notes.co.uk.

Topics covered in this module

Basics.
Creating a list.
Referencing an element in a list.
Changing a list.
The length of a list.
Context.
Summary.
Functions that operate on lists.
Functions that let you manipulate the elements within a list.
Functions that let you re-order a list (returning a new list).
Function to return the length of a list.
Operators that relate to lists.
Operators than manipulate strings and lists.
Iterating through a list.
List slices.
Anonymous lists.
Summary.

Complete learning

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