Shedding some parentheses is probably a good idea, though. {(⊢{⍵/⍺}((~∊∘'aeiou'∧∘(1↓∧⌿)¯1 0 1(⌽⍤0 1)0,∊∘(819⌶⎕A))819⌶))⍵}

Actually, I don’t need the 0 rotate because it’s implied in testing for a vowel.

What would be an idiomatic way of sum reducing a multidimensional numeric array all the way to a single number (total sum)?

@BoazC +/,

@PaulMansour 🤦thanks

has the trophy colour on the contest site changed? is it no longer silver/gold?

@user1031662 Hi Anne Atkinson. Are you interested in APL?

@BoazC Nothing to do with tacit vs dfn, but rather the lack of identity element. See apl.wiki/Identity_element

@BoazC In certain cases, +/⍣≡ could be faster than +/,

@BrianBED That doesn't sound right. ⎕NL shouldn't affect the stack at all. Maybe you had a typo and accidentally used the name of a recursive function? Or maybe the output was gigantic? Anyway, I just want to add that ¯2 gives you a vector of vectors, instead of a matrix.

which obviously is quite problematic

@user1031662 Sorry, I forgot you can't answer here. Please email access@apl.chat if you want to participate.