IT without boundaries So say the coffee mugs where I'm training this week - a company motto that seems very appropriate when I'm teaching about Perl's lists. Most languages allow you to define a whole series of values in a single variable (an array), but if you're writing in C or Java, you're probably used to having to define the number of elements, and the size of each element, ahead of time. Perl is different - with Perl lists you can simply refer to the list for the first time and it will be created, and you can save as many values as you like into it and the list will be extended as need be to handle your request.

I must be fair to C and Java, though. In C, you can use calloc, malloc and realloc to dynamically assign memory if you wish and Java's Vector and ArrayList classes also let you set up a dynamic container in a similar way in that language.

(written 2005-03-09 17:37:09)

 P208 - Perl - Lists
P211 - Perl - Hashes

Back to What and why for the epoch

Previous and next or Horse's mouth home

Forward to Dress for training

Getting your examples, my examples and the data files after your course
new 'Perl on the Web' example
Satisfaction of training
Dress for training
Conventional restraints removed
What and why for the epoch
Difficulties with a trolley
Crossfertilisation, PHP to Python
Tapping in on resources
Preparation for a day's work
Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 at 50 posts per page


This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

Link to Ezine home page (for reading).
Link to Blogging home page (to add comments).