On Sep 11, 2012, at 8:41 PM, Camillo Bruni wrote:
>
> On 2012-09-11, at 20:36, sergio_101 <sergio....@gmail.com> wrote:
>
>> yes, i know this sounds simple.. but is it possible to instantiate an
>> object with some parameters?
>>
>> say i have a dictionary:
>>
>> params := Dictionary new.
>> params at: 'sound' put: 'bark'
>>
>> dog := Dog new.
>>
>> ^^ at this point, i would like to just create a dog and send it
>> 'params' all at once..
>>
>> can i do this? what would the syntax look like?
>
> sure :) in Smalltalk (almost) everything is a message-send :)
>
> So you can do the following:
>
> dog := Dog sound: 'wuff'.
>
> then a class side method:
>
> Dog class >> #sound: aString
> ^ self basicNew
> initializeWithSound: aString;
yourself.
Otherwise you may have some strange behavior if the #initializeWithSound:
message doesn't return the receiver :)
Ben
>
> then the initializeWithSound: methods on instance side
>
> Dog >> #initializeWithSound: aString.
> self initialize.
> "now do the special initialization here..."
> " for instance set the sound"
> sound := aString.
>
> Dog >> initialize
> "do the default initialization here"
> "for instance set a default sound"
> sound := 'bark'.
>
>
> Hope that helps :)
>
>
