[squeak-dev] isSelfEvaluating (was: Re: The Trunk:
Collections-nice.173.mcz)
Bert Freudenberg
bert at freudenbergs.de
Fri Oct 30 23:50:17 UTC 2009
On 30.10.2009, at 19:13, Nicolas Cellier wrote:
> 2009/10/30 Nicolas Cellier <nicolas.cellier.aka.nice at gmail.com>:
>> 2009/10/30 Eliot Miranda <eliot.miranda at gmail.com>:
>> currently it is a 3 stages rocket:
>>
>> Array with: 1. -> #(1)
>> Array with: 1 at 2. -> {1 at 2}
>> Array with: OrderedCollection new. -> an Array(an OrderedCollection
>> ())
>>
>>> prints as { OrderedCollection () } than #(OrderedCollection ()).
>>> The first
>>> is a syntax error but the second is completely ambiguous (i.e.
>>> evaluates to
>>> #(#OrderedCollection #())).
>>> So I don't see the need to provide isSelfEvaluating. isLiteral
>>> gives you
>>> all that you need to avoid printing an Array as a literal when it
>>> isn't.
>>> And if you've drunk the braces kool aid (which I have, while
>>> studying my
>>> agrippa) you're happy with Arrays printing themselves as brace
>>> constructs
>>> naively even when the naive print produces non-code.
>>
>> That's a fair and simple approach.
>>
>
> I gave it a try, now every Array print as #( ... ) if literal,
> { ... } otherwise
> Please vote
I like the self-evaluating print string. It's useful for interactive
use and debugging. Plus shorter, usually.
- Bert -
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