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3106 - Buckets
"What is a bucket?" ... A question asked during a recent programming course, and probably not one to answer along the lines of "an open topped plastic or metal receptacle to catch, hold or transport water, sand or other materials." In programming terms, a bucket is a software unit of memory allocati ....

3105 - Adventure with references to lists and lists of references
I remember an old game I used to play on DEC 10 (and VAX and PDP-11) computers - the original adventure game, perhaps ([see here]) which was pure text / instruction based and you traveled North, South, East and West through the colossal cave. And there was one are - the maze - where you could get r ....

3104 - Catering in Syracuse, the Saigon Cafe, stolen images and Christmas
It was - indeed - a lovely buffet that we laid on at our old training centre in 2005 during a Perl course. So we took a picture of it, and included it in our slide show. Other, too, loved the picture and "hotlinked" it from our site into their various Plurks, to the extent that we were getting up t ....

3103 - Thank you - and Happy Christmas
A personal, big, THANK YOU to all of our customers, and all our staff, for everything they've done for Well House this year, and a very happy Christmas to one and all. A business wouldn't function without customers ... and it wouldn't be such a pleasure to run without such great customers. Alm ....

3102 - AND and OR operators - what is the difference between logical and bitwise varieties?
Many modern programming languages have two operators for "or" and two for "and" - described as "bitwise" and "logical" operators. And you need to choose the right one in the right circumstances ... otherwise your code won't behave quite as you expect. Bitwise OR takes the internal bit pattern of t ....

3101 - The week before Christmas
The canal at Devizes earlier today as we passed through. You'll see from the ice that we weren't passing through by boat, nor was anyone else From the Perl for larger projects training course - a diagram to illustrate the problem of "diamond relationships". This is where a module "a" loads a mod ....

3100 - Looking ahead and behind in Regular Expressions - double matching
Look-ahead and look-behind are a way of "double matching" in a regular expression. If you're at a certain point in the match and you think "the next bit should conform to xxx and at the same time it should conform to yyy" then you can describe xxx via a look-ahead, and follow that with matching yyy ....

3099 - Perl - database access - DBD, DBI and DBIx modules
Perl's DBI module provides an excellent link from SQL databases to Perl, and the assorted DBD modules that fit underneath it allow it to operate well for a whole lot of different databases. But they are only excellent as far as they go - for the SQL statements have to be generated in your applicati ....

3098 - Learning Object Orientation in Perl through bananas and perhaps Moose
Perl has the most incredbible range of OO facilities (though at times it's overfeatured and a bit old fashioned / tricky to use). So yesterday I wrote a whole series of examples ... and then went on to explore Moose - a module which adds extra keywords and lets you define your classes in a shorter ....

3097 - Making Perl class definitions more conventional and shorter
Perl 5's object oriented capabilities are excellent - but often a little longwinded, and quite easy to get wrong. Moose sells itself as "postmodern object system for Perl 5 that takes the tedium out of writing object-oriented Perl"; it's available for download from the CPAN under same license as P ....

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