[Cuis-dev] StyledTextEditor uses RunNotArray instead of RunArray

[Juan Vuletich]

On 9/17/2023 11:06 AM, Bernhard Pieber via Cuis-dev wrote:
> Hi Juan,
>
> If I open a StyledTextEditor using StyledTextEditor open it uses a 
> RunNotArray instead of a RunArray for its text like the 
> SmalltalkEditor but unlike the TextEditor.
>
> The way SUnit test setup works it mostly uses a RunArray.
>
> Is this intentional, or would it better to use a RunArray?
>
> Cheers,
> Bernhard
>
>

Hi Bernhard,

The original implementation of Text from Smalltalk-80 uses RunArray 
only. RunArray is a space optimization, as usually the same text 
attributes are used by many consecutive characters. But it is expensive 
in time, and I found it to slow down significantly the styling of long 
Smalltalk methods. Hence, #optimizedForMutationSpeed and RunNotArray.

Any code using Text should work the same using any of them (except for 
the speed / space tradeoff).

What problem are you seeing with RunNotArray? How can I reproduce it?

Thanks,

-- 
Juan Vuletich
cuis.st
github.com/jvuletich
researchgate.net/profile/Juan-Vuletich
independent.academia.edu/JuanVuletich
patents.justia.com/inventor/juan-manuel-vuletich
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