Re: [Pharo-users] Equality and hash

[Trussardi Dario Romano]

Thanks Denis. 

> There is refactoring which sadly not available from menu. But you can 
> evaluate it manually:
> 
> (RBGenerateEqualHashRefactoring className: #YourClass variables: #(var1 
> var2)) execute

My problem is display in this image.

In the left the inspector display all the items in the bag ( it's right )

In the right the inspector display the relative  Occurences,but some are 
set to 0.
 




Because ?

Thanks for considerations,

Dario

> 2017-02-20 13:46 GMT+01:00 Trussardi Dario Romano 
> :
> Ciao,
> 
> i works with Pharo 4.0 environment.
> 
> I have a class Product  with some instance variable and the  =
>   method set to:
> 
> = anItem
> 
> anItem ifNil:[^false].
> 
> anItem class = self class ifFalse:[ ^false].
> 
> ^  rfrConsegna  = anItem rfrConsegna
> and:[ rfrSubTable  = anItem rfrSubTable
> and:[ rfrDcm = anItem rfrDcm
> and:[ indexRiga = anItem 
> indexRiga
> and:[ referenceTime = 
> anItem referenceTime
> and:[ 
> consumer = anItem consumer
> and:[ 
> item = anItem item
>   
>   and:[ opzioniVoce  = anItem opzioniVoce
> ]]]
> 
> Some of these variables are instances  of classes with specific 
> implementation and some variables themselves.
> 
> 
> I set the relative hash method to:
> 
> hash
> 
> ^ rfrConsegna hash
> bitXor:( rfrSubTable  hash
> bitXor: ( rfrDcm hash
> bitXor: ( indexRiga hash
> bitXor: ( referenceTime hash
> bitXor: ( consumer   hash
> bitXor: ( item   hash
> bitXor: ( 
> opzioniVoce  hash
> 
> )))
> 
> Now when add some setup instances of class Product  to a bag,
> 
>  the relative inspector report
> 
> some aProduct entry but with some Occurences of this set to 0.
> 
> aProduct1   3
> aProduct2   0
> aProduct3   0
> 
> 
> Some consideration about it ?
> 
> Some references about hash implementations ?
> 
> Thanks,
> 
> Dario
> 
> 
> 

Re: [Pharo-users] Equality and hash

[Denis Kudriashov]

There is refactoring which sadly not available from menu. But you can
evaluate it manually:

(RBGenerateEqualHashRefactoring className: #YourClass variables: #(var1
var2)) execute


2017-02-20 13:46 GMT+01:00 Trussardi Dario Romano <
dario.trussa...@tiscali.it>:

> Ciao,
>
> i works with Pharo 4.0 environment.
>
> I have a class Product  with some instance variable and the
> =  method set to:
>
> = anItem
>
> anItem ifNil:[^false].
>
> anItem class = self class ifFalse:[ ^false].
>
> ^  rfrConsegna  = anItem rfrConsegna
> and:[ rfrSubTable  = anItem rfrSubTable
> and:[ rfrDcm = anItem rfrDcm
> and:[ indexRiga = anItem
> indexRiga
> and:[
> referenceTime = anItem referenceTime
> and:[
> consumer = anItem consumer
>
> and:[ item = anItem item
>
>   and:[ opzioniVoce  = anItem opzioniVoce
> ]]]
>
> Some of these variables are instances  of classes with specific
> implementation and some variables themselves.
>
>
> I set the relative hash method to:
>
> hash
>
> ^ rfrConsegna hash
> bitXor:( rfrSubTable  hash
> bitXor: ( rfrDcm hash
> bitXor: ( indexRiga hash
> bitXor: ( referenceTime hash
> bitXor: ( consumer   hash
> bitXor: ( item
>  hash
> bitXor: (
> opzioniVoce  hash
>
> )))
>
> Now when add some setup instances of class Product  to a bag,
>
>  the relative inspector report
>
> some aProduct entry but with some Occurences of this set
> to 0.
>
> aProduct1   3
> aProduct2   0
> aProduct3   0
>
>
> Some consideration about it ?
>
> Some references about hash implementations ?
>
> Thanks,
>
> Dario
>
>
>