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3436 - Moving from scripting to Object Orientation in Python
Using what's been described as the scripting idiom, a "scripter" will write a series of code steps which perform a task from top to bottom. For a job that only involves simple data manipulation (even if there's a lot of data to have that manipulation applied), this approach can be very effective in ....

3435 - Sorta sorting a hash, and what if an exception is NOT thrown - Ruby
Some gems from last week ... 1. Ruby's begin and rescue clauses allow you to catch anything exceptional that could derail your program. But did you know that you can also add an else clause to be run only in the event of there being no exception? There's an example from last week's Ruby course ....

3434 - Sundays - and over eating
It's now 2 weeks since the last of our extra summer trains on the TransWilts line, which provided a new opportunity for many for a day out. On the final Sunday, 440 people travelled on the extra morning trains, with around 250 of them returning on this train - the 19:37 Westbury to Swindon, and ar ....

3433 - Exceptions - a fail-safe way of trapping things that may go wrong
As part of a previous post, I was looking at the "Internal Server Errors" logged on our web server over the past 3 months ... and I found one coming from a Python / CGI demonstration which I wrote and uploaded for a delegate a couple of months back. Internal server error 500 (by default on Apache h ....

3432 - 3 digit HTTP status codes - what are they, which are most common, which should be a concern?
We often talk during web related course / course modules about the status codes that are returned by servers - but I don't think I've ever written up a (near?) complete list. They are all three digit codes, and they're grouped by hundreds - so 200 series code are success, 400 codes are requests th ....

3431 - Ruby at both extremes of your website
Q: How is Ruby used on the web? A: At both extremes. Here's a web server ... serving documents and programs (on the right) to browsers (on the left). On the server, here is Ruby on a Rails Framework on the right. Requests to the Web Server are passed to the routing section of Rails, then routed ....

3430 - Sigils - the characters on the start of variable names in Perl, Ruby and Fortran
A sigil (from Latin sigillum "seal") is a symbol created for a specific magical purpose. A sigil is usually made up of a complex combination of several specific symbols or geometric figures, each with a specific meaning or intent. In computer programming, a sigil is a special symbol attached to a va ....

3429 - Searching through all the files in or below a directory - Ruby, Tcl, Perl
Many of our customers want to learn how to traverse all the files in a directory, or perhaps even all the files in or below a directory. I quite often write a demonstration program during our courses which looks though part of a file system tree for files over a certain size, or for the largest (so ....

3428 - How many days to Christmas?
It's only 107 days to Christmas ... courses for next year have already been scheduled [here], the days are drawing in quite quickly, and a Ruby program I wrote to show hoe the Time class works told me. Source code [here]. What's lovely about Ruby is that it has the flexibility of Perl, and the tog ....

3427 - What is on the Melksham Agenda?
Pulling together headlines from various sources, I've come up with the following as a list of "interesting things going on / happened recently in Melksham" ... Events 2012 -> Town Council Area Board, 20th September Art in Wiltshire initiative 26th SCOB meeting 27th Chamber meeting Town Traders Mee ....

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