When you're reading and processing data, it often comes in the form of a series of records, with each record being split into a series of fields, and you'll often want to be going through the data several times, looking at different rows and colums, sorting them, comparing them, and so on. If the a ....
On Sunday, 5th December Santa Claus will be on the 17:15 First Great Western Train from Melksham to Swindon, and on the 18:15 train coming back. He'll be handing our presents to the children on the train, and there will be minced pies and a seasonal drink for the adults and soft drinks for the chil ....
"There's more than one way to do it". So says the first book in our Perl Library - Perl Programming, also known as "The Camel Book". And that eclectic collection of lots of ways of doing the same thing applies all over Perl; when I'm running Perl Courses, I'm often asked "how do I ..." questions an ....
Look at this Perl statement:
$counter = $counter + 1;
"Take the value in $counter, add 1 to it, and put it back in $counter". It's a common programing requirement - indeed, so common that you can write it in a shorter form in many languages:
$counter += 1;
"Add one to the val ....
This is the fourth of a series of articles that reviews where Well House Consultants has been - and where we're going - after 6 years of blogging and some 3000 articles. - "towards the next 3000"
Moving Course Subjects Forward
I previous wrote a long article looking - at post number 3000 - how we ....
If I write
a = b + c
in Python, I'm really writing
a = b.__add__(c)
(see source code example [here]
In other words, every variable is an object and every operator is a method. It's just the icing on the cake that makes the language as powerful as it is - with the clever e ....
This is the third of a series of articles that reviews where Well House Consultants has been - and where we're going - after 6 years of blogging and some 3000 articles. - "towards the next 3000"
Moving Course Material and Presentation forward
What has changed recently / will or may change, sooner ....
This is the second of a series of articles that reviews where Well House Consultants has been - and where we're going - after 6 years of blogging and some 3000 articles. - "towards the next 3000"
Six years ... and 3000 posts ... after my first article - where will the next six years, or 3000 post ....
This is the first of a series of articles that reviews where Well House Consultants has been - and where we're going - after 6 years of blogging and some 3000 articles. - "towards the next 3000"
I'm headed towards article number 3000 - this is blog article 2999. I started writing back in the sum ....
Exceptions are sometimes "sold" as a way of trapping errors - but they're more than that - they're an excellent way of trapping conditions where there isn't a valid result.
"How many people live in this house" you may ask of a function / method call, and the answer may come back as "2" or "5" ... o ....