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 ânewâ 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 âsilent" 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
LargeInteger is not what you should use. Try this: v:= SmallInteger minVal - 1 In 64-bit, one gets:"-1152921504606846977" and there you have a LargeNegativeInteger that prints properly. v := SmallInteger maxval + 1 "1152921504606846976" same but positive. You have Integers that are Numbers and why bother with the large or small thing? It works. If things are getting slow, well, profile and optimize. Phil On Mon, Jul 24, 2017 at 10:54 AM, Koos Brandt <brandt.koos@gmail.com> wrote:
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 ânewâ 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 âsilent" 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 â¦
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
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phil＠highoctane.be