Perl - Initial String Handling

Initial String Handling - Perl module P205

One of Perl's great strengths is its string handling. It can perform operations on a character-by-character basis, or on strings as a whole. It also has a powerful facility known as regular expressions, which allows the knowledgable programmer to write one line of code that would otherwise be pages long!

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

Examples from our training material

bticks	backtick operator - runs an operating system command
cs	Exercise answer - completing a sentence
finsent	Trimming a sentence
firststring	low level string functions demonstrated
heredoc	Use of a here document for copyright block
pattern	Regular expression learning tool
perlstring	Ways of writing strings in Perl
pf2	Filter roads.xyz to match a pattern (using open or die)
pfilter	Filter roads.xyz to match a pattern
pig	Regular expression - first example with anchors, literals, groups, and counts
plook	Simple example of reading and filtering a data file
prop2	Using double quoted strings to change case
prop3	single and double quotes, q and qq strings
proper	Case changes on string
pws	Use of eq rather that == for string comparison
romance	Quoted strings, qq strings and here documents
sc	Case insensitive comparison
singlename	regex to look for a single name

More web pages on this subject

Regular Expressions in Perl

Opentalk forum discussions related to this topic

using reg exp with index
any option other than substr
Column alignment
Regular Expression Help
Eights and nines
Text strings single or double quotes
Capturing STDERR with backtics

Pictures

Perl is a great tool for handling huge data files

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

String handling functions.
String handling operators.
Double-quoted strings.
Single-quoted strings.
qq and q strings.
Here documents.
Comparing strings exactly.
Comparing strings to regular expressions.
Summary.

Complete learning

If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses at our training centre in Melksham, Wiltshire, England. It's surprisingly cost effective to come on our public courses - even if you live in a different country or continent to us.

We have a technical library of over 600 books on the subjects on which we teach. These books are available for reference at our training centre. Also available is the Opentalk Forum for discussion of technical questions.