[Newbies] Testing = and == in workspace

Ron Teitelbaum ron at usmedrec.com
Sat Jan 7 05:40:21 UTC 2012


Hi Ben,

Have a look at the method for yourself.  Check out the method = on the
instance side of String. 

It should be pretty obvious when you get to the actual string comparison.

All the best,

Ron Teitelbaum

> -----Original Message-----
> From: beginners-bounces at lists.squeakfoundation.org [mailto:beginners-
> bounces at lists.squeakfoundation.org] On Behalf Of Ben Coman
> Sent: Saturday, January 07, 2012 12:15 AM
> To: A friendly place to get answers to even the most basic questions about
> Squeak.
> Subject: [Newbies] Testing = and == in workspace
> 
> I was trying to confirm the operation of = and == in the workspace by
> executing the following code..
> 
> x :=  'xxx'.
> y :=  'xxx'.
> z := x.
> (OrderedCollection new) add: (x = y) ; add: (x == y) ; add: (x=z); add:
> (x==z); yourself.
> 
> I was confused that I was getting anOrderedCollection(true true true true)
> 
> It was not until I changed to the following code...
> 
> x := String newFrom: 'xxx'.
> y := String newFrom: 'xxx'.
> z := x.
> (OrderedCollection new) add: (x = y) ; add: (x == y) ; add: (x=z); add:
> (x==z); yourself.
> 
> that I got the expected anOrderedCollection(true false true true)
> 
> I was curious what was going on in the first case.
> 
> cheers, Ben
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