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xpqz
xpqz
16:02
Is it true that two arrays that have the same shape and enlist the same must always match?
rak1507
rak1507
enlist as in ∊ or ,?
xpqz
xpqz
∊
rak1507
rak1507
no, (1 2) (3 4) and 1 (2 3 4)
xpqz
xpqz
D'oh yeah obv
rak1507
rak1507
another fun question, find something that errors when compared to itself
xpqz
xpqz
16:23
You have me beat
awagga
awagga
16:37
@rak1507 Errors, or returns 0?
I ask because I'm puzzled how ≡⍨ could error
 
3 hours later…
Adám
Adám
19:25
@rak1507 ⋄ =⍨1e3000
TryAPL
TryAPL 
@Adám
DOMAIN ERROR: ⎕FR=645 limits arithmetic to the range +/-1.79E308 (approx)
      =⍨1E3000
      ∧
rak1507
rak1507
19:44
@Adám fun
@awagga ≡⍨ can't sadly
at least not that I'm aware of
awagga
awagga
I see
I assumed equal to itself meant ≡
rak1507
rak1507
(yes that is what I meant and then I realised I was doing something wrong lol)
⋄(0⍴#)≡0⍴#
TryAPL
TryAPL 
@rak1507
NOT PERMITTED: Illegal token
      (0⍴#)≡0⍴#
     ^
rak1507
rak1507
argh
well it nonce errors: but ≡⍨ doesn't
Adám
Adám
Because ≡⍨ is optimised to not actually compare.
rak1507
rak1507
19:47
yeah, that's what I figured
assigning to a variable and doing x≡x also gives 1, so it's not just ≡⍨ but anything compared to itself
Adám
Adám
Same pointer.
@rak1507 ⋄ {(0⍴⍵)≡0⍴⍵}⎕JSON'{}'
TryAPL
TryAPL 
@Adám (1 trailing line)
NONCE ERROR
      {(0⍴⍵)≡0⍴⍵}⎕JSON'{}'

␄

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