[squeak-dev] a transitive law broken by Fraction since 5.3

Chris Muller ma.chris.m at gmail.com
Fri Dec 31 00:29:37 UTC 2021

*“If a is equal to b and b is equal to c, then a is equal to c.”*

| a b c |
a := Fraction numerator: 5 denominator: 1.
b := 5.0.
c := 5.
self assert: a=b; assert: b=c.   "Pass"
self assert: a=c.    "Fail"

I understand this is not a normal way to create Fractions, but serializers
must often construct objects in other-than-normal ways.  This constructor
on Fraction is actually a valid API, but leaves an inconsistent comparison
contract with other Numbers.

I fixed it by reverting Fraction>>#= to the (nice 3/28/2006 23:41) edition.

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