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2627 - Saturdays out from Melksham - to Oxford, to Didcot or to Swindon
Fancy a day out with the family from Melksham to Oxford, to Swindon or to Didcot? We took a train trip on Saturday to Oxford from Melksham Station ... three adults and one dog - total return fare to Oxford £24.15. The train left Melksham station (free parking) at 09:18. We bought our tick ....

2626 - On Malachite Green
"Malachite" - Copper Carbonate. But know to me as a rather rich, bright, exotic green colour that's so bright and rich it's rarely seen. I moved to the south east of London in 1959, at a very young age - with no car for our day to day family life (and that was no great hardship), we used the south ....

2625 - Both feet on the same pavement
Wednesday Morning 08:30, February, Moorgate, London. I'm fascinated by some people who feel that the rules don't apply to them. The guy I just had to walk past, bathed in a cloud of smoke of the almost-enclosed lobby with its clear "it is illegal to smoke here" signs, the young lady using her pers ....

2624 - Skyline and looking up in London
For those readers who feel I have a one track (Ruby) mind this week - here are a couple of pictures. This first taken out of the bedroom of the hotel I was in Sunday through Tuesday evenings (I've move on elsewhere in London now to my next job and the outlook is suburban by comparison. London has ....

2623 - Object Oriented Ruby - new examples
We had an "object oriented Ruby" morning on today's course. "But everything's an object in Ruby" you'll tell me and you're sort of right (we could argue about what symbols and code blocks are), but there are certain elements of object orientation which require specific coverage. Here are links to t ....

2622 - Handling unusual and error conditions - exceptions
"I can't answer that question in the way you expect" ... that's something that may be said to you occasionally - you ask someone what suit a playing card is that they're holding and they cannot tell you because it is a joker, or you ask what number is written on a piece of paper when the paper is bl ....

2621 - Ruby collections and strings - some new examples
From yesterday's Ruby course - a whole set of new examples on Ruby collections - arrays (which are ordered lists) and hashes (which are unordered). In other words, you look somethng up in an array by its position number, whereas you look something up in a hash based on its unique key, and the way it ....

2620 - Direct access to object variable (attributes) in Ruby
Rather than writing getters and setters, in many Object Oriented languages you can access the variables within an object directly. That can be dangerous for code flexibility for the future, as it means that you're removing the possibility of interspersing code. However, it can be very convenient. ....

2619 - Passing code to procedures and yield in Ruby
If you want to pass a block of code into a Ruby procedure, you can do so by passing in the code to a variable who's name you start with an & in the procedure definition; you can then run that code using the .call method on the received object. In some ways this is an indirect reference - in Ruby ....

2618 - What are Ruby Symbols?
Ruby Symbols are names that follow a : character. They're a quick way of getting at data, where (for example) you have a fixed key or name in a hash, and you'll find them commonly used in many definitions such as in Ruby on Rails. I've put a short example [here] ....

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