Hi
I am still learning but something weird happened.
In a new Workspace
Do-it myVar := LargeInteger new
Print-it myVar <error in printString: try 'Inspect it' to debug>
When I inspect it I get
SubclassResponsibility: LargeInteger had the subclass responsibility to
implement #printOn:base:
When I browse LargeInteger, then at Integer level I get a message “new” as
follows:
new
self == Integer ifTrue: [
^ self error: 'Integer is an abstract class. Make a concrete
subclass.'].
^ super new
I looked for new higher up in the hierarchy(super), but could not see it. Maybe
I am a bit dumb still with looking up.
I tried on SmallInteger a new, but got back
Error: SmallIntegers can only be created by performing arithmetic.
I then checked and noticed that SmallInteger actually have new and basicNew
implemented (override)
So the error I got on smallinteger was from the override
LargeInteger has no override, but has a “silent" error
This seems a bit weird to me
Just so you know I also tried
Do-it myVar := LargeInteger new: 10000
Print-it myVar class. -> LargeInteger
Dot-it myVar := myVar + 1
The last statement hangs the image! (Tried 3 times)
Comment:
1. I am surprised that Do-it did not give me an error on the new: (there is a
message is the hierarchy of new:neg and maybe the neg is optional?)
2. The new: seemed to have created 10000 LargeIntegers
3. I tried the new: also with just 5, and same result, image hang. (I thought
10,000 was maybe a very large loop for the + 1..)
Did I damage something in the image maybe? I started this one just yesterday to
look at MOOC week1.
I do not need LargeIntegers for now but …
This is Pharo 6.0 64 Bit on Mac OSX Sierra 10.12.5 (iMac 27, 2.9GHz Intel Core
i5, 16GB RAM)
Regards
Koos Brandt
0824542028
