On 1 avr. 2014, at 16:21, Roelof Wobben <r.wob...@home.nl> wrote: > Camille Teruel schreef op 1-4-2014 15:08: >> On 1 avr. 2014, at 14:52, Roelof Wobben <r.wob...@home.nl> wrote: >> >>> Hello, >> Hello, >> >>> Im on this page now: http://squeak.preeminent.org/tut2007/html/017.html >>> >>> I do not understand one thing. >>> >>> Where do I put the initialize "script" >> #initialize is not a script, it's a method. When an object is instantiated >> (for ex with: MyObject new) #initialize is automatically sent to it. >> This is the place to put your newly created object in a correct initial >> state. >> In your class, you just define a protocol named for example "initialization" >> where you put all the initialization-related methods. >> Note that protocols have no meaning, i.e. they don't change how your objects >> behave, they're just here to help you classify >> the methods of a class by concerns. >> So the tutorial tell you to create two methods: #initialize that is >> automatically called after an object has been instantiated and >> #initializeActiveSegments where you >> put some other initialization logic, that's all. >> >>> When I put it on the initializeActiveSegments then initialize get not found. >> Sorry, I don't understand. >> >>> Or must I make a seperate protocol named ActiveSegments for it. >> No use the same protocol "initialization" or "initialize-release" or >> whatever. >> > > Oke, > > I changed it so I have this : > > Laser-Game-Model > with as classes: > - BlankCell > - Grid > - MirrorCell > -TargetCell > > > BlankCell has the following protocols: > - initializing-release > - testing > > Initializing - release contains the following methods: > - initialize > - initializeActiveSegments > > testing contains the following methods: > isOn > isOff > > but when I run the test-runner I see this : MessageNotUnderstood : BlankCell > >> activeSegments.
This error means "instances of BlankCell does not understand the message #activeSegments" that's all, this part of your program is not implemented yet. > > Roelof
