See You on the Other Side

    self.myWebView.backgroundColor = [UIColor clearColor];
    [self.myWebView setOpaque:NO];

Very easy when you know it!

describe(@"Conference", ^{
    it(@"loads given a filename", ^{
        Conference *conference = [[Conference alloc]initWithFile:@"talks_with_three_tracks"];
        [[theValue([conference hasData]) should] beTrue];
    });
});

with a simple init method:

-(id)initWithFile:(NSString *)filename{
    if ((self = [super init])) {
        NSString* path = [[NSBundle mainBundle] pathForResource:filename ofType:@"json"];
        NSError *error;
        NSString* talksString = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:&error];
        talks = [talksString JSONValue];
    }
    return self;
}

-(BOOL)hasData{
    return talks!=nil;
}

Unfortunately it doesn’t work , because path is nil;
But here it isthe solution:
instead of using [NSBundle mainBundle], we should use the bundle associated with our class:

        NSString *path = [[NSBundle bundleForClass:[Conference class]] pathForResource:filename ofType:@"json"];

Simple and neat: thank you StackOverflow

Technorati Tags: bdd, iphone, tdd

class Shape
  def initialize(args)
    @sides = args[:sides]
  end
  def draw
    puts "Drawing #{@sides} sides"
  end
end

square = Shape.new(sides: 4)
sum = 0
(1..3).each do |value|
  square = value * value
  sum	+= square
end
puts sum
square.draw

Ruby 1.9.2 it’s possible add a local variable to a block:

class Shape
  def initialize(args)
    @sides = args[:sides]
  end
  def draw
    puts "Drawing #{@sides} sides"
  end
end

square = Shape.new(sides: 4)
sum = 0
(1..3).each do |value; square|
  square = value * value
  sum	+= square
end
puts sum
square.draw

Now it works as expected

From today he starts to tweet a piece of Ruby every day, mainly 1.9.2.

The first tweet is about Enumeration.reduce, an alternative, and more speaking, name for Enumeration.inject:
ruby-1.9.2-p136 > (1..3).reduce(:+)
=> 6


The strange argument is the symbol for plus, the operation to do to each element.
A more verbose, and less magic, version is:
ruby-1.9.2-p136 > (1..3).reduce {|sum, e| sum+e}
=> 6


In Build menu you can find a new entry, Build and Archive, that creates your application and archive it, allowing to share and signing it in a more confortable way:

All archived applications are in a new window of the Organizer:

When you “share” an application an ipa file is created and you can share it with your betatesters:

Just a little thing, but it’s useful to manage all versions.

More information can be found in this interesting post by Jeff LaMarche: if are serious about iPhone development you must subscribe his blog (and buy his book too )

Technorati Tags: apple, iphone, xcode

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