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2979 - Ruby - yield; parallel routines
When you call a function / method in your program, you expect it to run to completion before returning control to you, passing back a result. For example, you might call a method to read a series of objects and store them into an array ... and then you could take that array of objects and, iterati ....

2978 - Christmas 2010 - Well House Manor, Melksham, Hotel
Well House Manor will be open throughout the Christmas and New Year period, and we'll be delighted to welcome guests who are in the area to visit friends and family, to see the Christmas Illuminations, or just looking for a few days away. We'll be offering a quiet location - no parties or banquet m ....

2977 - What is a factory method and why use one? - Example in Ruby
How do you create an object? By calling a constructor method, of course. But ... actually ... there's no "of course" about it. Here's a piece of code from an example I wrote yesterday:   sageroll.push Transact::factory(current) and that call creates an object ... Whilst you can create ....

2976 - Creating, extending, traversing and combining Ruby arrays
Ruby shares many of its eclecticism's with Perl - lots of ways of doing the same thing, though it doesn't go quite so far (some would say so far beyond the reasonable) as Perl does. So when you come to create or manipulate an array (really an ordered list) there's a big choice.   indian = ....

2975 - Why do I need brackets in Ruby ... or Perl, Python, C or Java
In many languages, you're required to put brackets around the boolean condition in your if and while statements, and around parameters you're passing to functions. And it becomes the natural way of coding for programmers in languages like Java, C and C++. But when you think about it, those brackets ....

2974 - Formatting your output - options available in Ruby
Almost every program I've ever written (and almost every program you'll ever write) is required to output a mixture of constant character strings and results - formatting the output into a human readable form, or adding in separators between values in data files which the next program in a chain wil ....

2973 - Learning to program - where to start if you have never programmed before
We teach many delegates how to program in "xxxx", where xxxx is a language such as Perl, PHP, Python, Lua, Ruby, etc. Some of those delegates arrive with us with prior programming experience, and require what is in essence a conversion course - the base concepts from Pascal will set them in good st ....

2972 - Some more advanced Perl examples from a recent course
I ran an extra Perl for larger projects course, single company, at the tail end of last week and into the weekend (the only gap in my diary for a few weeks!) and - as is often the case on single-company courses - I wrote some new illustrative code to show specific subjects that came up in a differen ....

2971 - Should the public sector compete with businesses? and other deep questions
If you find yourself thinking about something you saw six months ago, then it must have had an effect on you. And it's more than six months since I saw a sign in Cambridge advertising "free computer lessons". Why does it keep coming back to me - this yellow sign, tied to some railing to promote s ....

2970 - Perl - doing several things at the same time
What if you want a Perl process to go off in two different directions at the same time - perhaps a server that's going to handle several connections at the same time, or an application that's going to be doing heavy processing, but at the same time has to respond to inputs from elsewhere, such as th ....

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