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3769 - Muttable v immutable and implications - Ruby
A muttable object is one which can be changed in situ, and an immutable object is one that can't be changed in situ - if you want a modified version, you have to build it afresh, using whichever components you require from the orginal. And if the original's not required, you can then scrap it. The ....

3768 - Melksham Chamber of Commerce - looking to our future shape. Pivotal meeting next Tuesday
Melksham Chamber of Commerce and Industry is an institution that dates back many years - I posted a constitution that was some 20 years old a while back, and commented that most of it remains relevant today. Towards the end of the 20th Century, Chambers of Commerce in Wessex clubbed together to for ....

3767 - How well do you know Melksham?
Here are 24 pictures of signs taken in the town, all yesterday (16th June 2012), and all in the order that I took them too. They are all taken from places where there is right of way / general public access, so if you want to go around and look for them, you're free to do so and you won't need to v ....

3766 - Python timing - when to use a list, and when to use a generator
If you're going to cook dinner for the family, it's much more efficient to cook everyone's meal together. If you're a family of four, you won't want to cook four separate pans of carrots, but rather you'll want to cook them all together. But now imagine you're holding a carrot street party, and pr ....

3765 - Christmas in June? Melksham hotel bookings and Santa train
They say that Christmas planning comes earlier and earlier each year and indeed earlier today - 15th June and even before the longest day - I have been asked a couple of questions Well House Manor will be open over Christmas, as we have for the last couple of years. Our quiet hotel provides an idea ....

3764 - Shell, Awk, Perl of Python?
Very frequently, IT system users find they've got a data file in one format and they need to filter it and transform it. On Linux and Unix systems, utilities such as grep and cut were the tradtions, perhaps with some awk. Perl provided a single-program replacement for shell scripts that bolted toge ....

3763 - Spike solutions and refactoring - a Python example
Refactoring - taking a program that works (as far as it goes) and restructuring it so that it can go much further - that its code can be reusable, that it's more robust, that it can be updated to do more, and so on. Spike Solution - an answer to a problem that can go no further, and perhaps ignores ....

3762 - Learning to program - the if statement. Python.
Statements in a program run sequentially, unless you add specific code to make them do otherwise, with each statement being separated from the next in some way or another. Should you wish to run a statement in only some circumstances, you can use a conditional statement: • the word if (if is a ....

3761 - Melksham - placed 2254 out of 2255. What can be done about it?
From January to March, consultation inputs were required by the Department for Transport with regard to what "stakeholders" wanted to be included in the next franchise for operation of train services in the Thames Valley, Wessex, the Cotswolds, the West and South West, and South Wales. I understand ....

3760 - Why you should use objects even for short data manipulation programs in Ruby
It's so easy to take the "Bull at a gate" approach - to start writing code to do the job in hand without giving thought to code-reuse later on, or indeed to how the work can be used again later. And it's double easy to, for me to take the bull approach during a course, where I'm writing a short de ....

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