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Perl module P409
Searching
Exercises, examples and other material relating to training module P409. This topic is presented on public course Using Perl on the Web

As your web site grows from half a dozen pages to a hundred or a thousand, how are you going to help your customers find their way around? A good web site design with clear navigation is always vital but you'll also be well advised to provide some sort of search capability to help your users find the needle they want in what will inevitably become a bit of a haystack. We study algorithms for searching small and medium sized sites (or parts of sites) and provide pointers for you to indexing systems for large data sets.


Articles and tips on this subjectupdated
2233Transforming data in Perl using lists of lists and hashes of hashes
In Perl, you don't have conventional two dimensional arrays - you have lists which are single dimensional only. However, you can have a list that contains a reference to another list, in effect a list of lists. Very powerful stuff as it leads to a very flexible way of handling data structures - we ...
2009-06-14
 
1183Improving searches - from OR to AND?
There's a search box on the top of all our regular pages - put a word in there, submit the form, and you'll be offered a selection of appropriate pages ... and if there's nothing relevant, you'll be offered nearby spellings. Try a search for Ireland and a search for Irelond. Search for multiple words, ...
2007-05-11
 
Examples from our training material
ar5.cgi   Rekeying data - CGI example with form based control
bigger_search.pl   Setting up search indexes
indexer.pl   Simple search through a few web pages
my_search.pl   recursive search through HTML files
robotic_search.pl   Setting of a background indexer from a CGI script
searchform.html   Search form
yetwider.pl   Wider area search using a pregenerated central keyword resource
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
The science of searching.
Local searches using .
Searching a small local area without .
Searching a larger site.
Still wider searches.
Need for more efficient search!.
Need to find out sites to visit by crawling.
Need to be able to leave an enquiry running.
A robotic search program.
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 700 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.


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