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-rw-r--r--spec/reference.bqn9
1 files changed, 8 insertions, 1 deletions
diff --git a/spec/reference.bqn b/spec/reference.bqn
index 4b17031a..61767343 100644
--- a/spec/reference.bqn
+++ b/spec/reference.bqn
@@ -208,7 +208,14 @@ Merge←(0<≠∘⥊)◶⊢‿{
! ∧´⥊(c≡≢)¨𝕩
𝕩⊑⟜ToArray˜⌜↕c
}
-_ranks ← {⟨2⟩⊘⟨1,0⟩((⊣-1+|)˜⟜≠⊑¨<∘⊢)⥊∘𝔽}
+ValidateRanks←{
+ ! 1≥=𝕩
+ 𝕩↩⥊𝕩
+ ! (1⊸≤∧≤⟜3)≠𝕩
+ ! ∧´Int¨𝕩
+ 𝕩
+}
+_ranks ← {⟨2⟩⊘⟨1,0⟩ ((⊣-1+|)˜⟜≠⊑¨<∘⊢) ValidateRanks∘𝔽}
_depthOp_←{
neg←0>n←𝕨𝔾_ranks𝕩 ⋄ F←𝔽
_d←{