From:  Rav <None@example.com>
Date:  22 Jul 2020 01:22:32 Hong Kong Time
Newsgroup:  news.alt119.net/comp.lang.apl
Subject:  

Re: enclose a simple scalar

NNTP-Posting-Host:  null

On 7/21/2020 11:48 AM, mkr wrote:
> On Tuesday, July 14, 2020 at 9:35:10 PM UTC-4, Elijah Stone wrote:
>> On Mon, 13 Jul 2020, glogan1513@gmail.com wrote:
>>
>>> Would someone with access to a Sharp interpreter please enter ⊂3 and
>>> report the result. Thank you.
>> You can apparently get a copy of Sharp APL from
>> http://www.sigapl.org/Archives/waterloo_archive/apl/sharp.apl/index.html
>>
>> You will probably need to run it in dosbox (or similar), and probably need
>> to set up the font/charset somehow.
>>
>> -- 
>> time flies like an arrow;
>> fruit flies like a banana
> 
> Thanks Elijah! It all works great on my mac running Mojave. Not sure if it will work under Catalina. The option key generates APL symbols. Use option-delete to generate the overstrike symbols. To answer the original question, there is no special display of <3. It just echoes 3 as a response.
> 

It may look like just 3, but the question is whether it's depth has 
increased (whether it gets nested).  My understanding is that under 
Sharp APL it would.  I don't know what the symbol is under Sharp for 
computing depth (or if there even is one), but in some other APLs it's ≡ 
.  I would expect it's depth to be non-0 if it's nested.  So assuming  ≡ 
is the symbol for depth, try each of these:

≡3
≡<3
≡<<3