2007/8/12, Andreas Raab <andreas.raab at gmx.de>:
> stephane ducasse wrote:
> > But I'm confused do you imply that the order in which the elements were
> > added had an impact on the set?
>
> Yes.
>
> >
> > in VisualWorks
> >
>
> Well, but in VisualWorks also:
>
> String>>= aString
>         "Answer whether the argument is a string, and is not a symbol,
>         and the receiver's size is the same as aString's size, and each of the
> receiver's
>         elements equal the corresponding element of aString"
>
>         | size |
>         aString isString ifFalse: [^false].
>         aString isSymbol ifTrue: [^false].
>         (size := self size) = aString size ifFalse: [^false].
>         1 to: size do:[:index | (self at: index) = (aString at: index) ifFalse:
> [^false]].
>         ^true
>
> So in other words, in VisualWorks Strings and Symbols always compare
> false which is perfectly symmetric.

Just happens to be opposite of Squeak. Ah the joys of portable
Smalltalk code. BTW GST does it the same way as VW.

Cheers
Philippe