Technorati Tags: agile, bsw2010, software craftsmanship

This month we practiced with ObjectiveC; I gave an introductory presentation about the language, the ide and the framework, then we faced up to a nice Kata I proposed, inspired by some work of Brett Schuchert: the KataRpnCalculator.

I admit I’m amazingly surprised by how quick the Xpuggers learned the basic of the language and how good is the code they produced: awesome!
It’s the proof that it’s always a people problem not a technologic problem, and people with the right attitude can produce very good code, even though they don’t know very well the language.

It has been my first Barcamp, so I though it was necessary to present something, and I decided to assemble a little introduction to Tdd coding for Iphone.

Here there is the video of my presentation:

AgileCamp – iPhone agile DEV (di Giordano Scalzo) from Sketchin on Vimeo.

Technorati Tags: barcamp, bdd, iphone

Technorati Tags: conference, presentation

We had a lot of fun, and we are committed to arrange another Dojo, at the end of February.
If someone is interested to practice more, here you can find the text of the kata we practiced and here the code we produced.

Technorati Tags: doding dojo, kata, xpug

Anyway, I tried to record a good enough kata, that means without compilation error, in resonable time and typed in smooth way.
That could sound as a straightforward thing to do (I thought it that way), but I invite everyone tho give it a try: I did almost 10 complete recording, not counting all false starts or big mistakes near the end of kata.
I noticed how often I did errors in first steps, I think while I’m not into the “flow”, or at the end, when I start to relax.

Anyway, the only way to perform a Kata in a acceptable time for katakasts.com (less than 15 minutes) is to master the editor of choice.
I use vim for kata, but I’m far to be ‘fluent’ on it! Anyway, to save precious time, I learned a few usefu thricks.

First of all, we need to forget to navigate the text throught 'hjkl' or arrows keys, and use the line numbers features of vim.
With this command:

:set number

every line will appear with its number.
Almost every command of vim should be applied to a range of rows.
For example with this:

:20,30 co 35

we copy the block from line 20 to line 30 to line 35.
Or with this:

:20,30s/java/scala/g

we change word java with scala in previous code.
A little variant is

:20,30 co .

that copies the block at the current cursor position.

Anyway, you can enjoy these and other basic vim tricks in my Katacast:

KataCast: StringCalculator in Scala from giordano scalzo on Vimeo.

Technorati Tags: kata, scala, vim

I could admit I didn’t know very well Bdd, but following the good old advice “teach to learn“, I got a triple win:
I taught something new to Xpug guys, I learned a lot of new things and I improved my presentation skill.

Moreover, after a couple of hours after I put online my slides, the Slideshare team promoted my presentation in home page as features presentation: what a great result for a weekend presentation hack!

Technorati Tags: bdd, presentation, xpug

Technorati Tags: presentation, ted

It was an exciting and enriching experience, although little sigular because we were only two student: Pierlugi Pugliese and me!

Anyway, back to work my boss asked me to prepare a little presentation on Scrum to the upper and middle management; so I looked around and took several sources to write a simple, but appealing presentation.

The presentation was a success so that I performed it three more time to the whole Engineering department!

Technorati Tags: agile, presentation, scrum, slide, slideshare